The question of whether there are laws in ecology is important for a number of reasons. If, as some have suggested, there are no ecological laws, this would seem to distinguish ecology from other branches of science, such as physics. It could also make a difference to the methodology of ecology. If there are no laws to be discovered, ecologists would seem to be in the business of merely supplying a suite of useful models. These models would (...) need to be assessed for their empirical adequacy but not for their ability to capture fundamental truths, or the like. If, on the other hand, ecology does have laws, this prompts further questions about what these laws are and why even the best candidates for ecological laws fall short of what might be expected of laws. (shrink)
This article examines the role of experimental generalizations and physicallaws in neuroscientific explanations, using Hodgkin and Huxley’s electrophysiological model from 1952 as a test case. I show that the fact that the model was partly fitted to experimental data did not affect its explanatory status, nor did the false mechanistic assumptions made by Hodgkin and Huxley. The model satisfies two important criteria of explanatory status: it contains invariant generalizations and it is modular (both in James Woodward’s sense). (...) Further, I argue that there is a sense in which the explanatory heteronomy thesis holds true for this case. †To contact the author, please write to: SNF‐Professorship for Philosophy of Science, University of Basel, Missionsstrasse 21, 4003 Basel, Switzerland; e‐mail: marcel.weber@unibas.ch. (shrink)
I propose and motivate a new account of fundamental physicallaws, the Measurability Account of Laws (MAL). This account has a distinctive logical form, in that it takes the primary nomological concept to be that of a law relative to a given theory, and defines a law simpliciter as a law relative to some true theory. What makes a proposition a law relative to a theory is that it plays an indispensable role in demonstrating that some quantity (...) posited by that theory is measurable. In Section 1, I motivate the project of seeking a philosophical account of fundamental physicallaws, as opposed to laws of nature in general. In Section 2, I motivate seeking an account with the distinctive logical form of the MAL. In Section 3, I present the MAL and illustrate the way it works by applying it to a simple example. (shrink)
Abstract Intentional mental states have causes and effects. Davidson has shown that this fact alone does not entail the existence of psycho?physicallaws, but his anomalism makes the connection between the content and causation of intentional states utterly mysterious. By defining intentional states in terms of their causes and effects, functionalism promises to explain this connection. If intentional states have their causes and effects in virtue of their contents, then there must be intrinsic states (of the people who (...) have them) which are ?local causal surrogates? for the propositions believed, desired, or whatever. We can define these intrinsic states in terms of the laws that govern them, but these laws alone are not sufficient to account for intentional content. To do that we need to invoke laws which link these intrinsic states with their contents. Such a ?wide? functional account is sketched; it combines a suggestion of Ramsey's about truth conditions with a ?feedback? account of the content of desires. (shrink)
What are the laws of physics? -- The stuff that kicks back -- Point-of-view invariance -- Gauging the laws of physics -- Forces and broken symmetries -- Playing dice -- After the bang -- Out of the void -- The comprehensible cosmos -- Models of reality.
Not much. I demonstrate this by constructing a model of a memory system governed by deterministic, time reversible laws only, thereby showing that the mere fact of our having memories solely of the past does not necessitate an indeterministic, time asymmetric or stochastic physics, essentially thermodynamic processes or a primitive notion of time asymmetric causation.
o an outsider, nothing might seem more ridiculous than the spectacle of grown men and women sitting around a conference table soberly discussing what would happen if a volume of the Encyclopedia Britannica were dropped down a black hole. Yet this very question lies at the heart of the "information paradox," a seeming contradiction to the laws of physics that is causing scientists to re-examine some of their most basic assumptions about how the universe is made.
The necessary but not sufficient conditions for biological informational concepts like signs, symbols, memories, instructions, and messages are (1) an object or referent that the information is about, (2) a physical embodiment or vehicle that stands for what the information is about (the object), and (3) an interpreter or agent that separates the referent information from the vehicle’s material structure, and that establishes the stands-for relation. This separation is named the epistemic cut, and explaining clearly how the stands-for relation (...) is realized is named the symbol-matter problem. (4) A necessary physical condition is that all informational vehicles are material boundary conditions or constraints acting on the lawful dynamics of local systems. It is useful to define a dependency hierarchy of information types: (1) syntactic information (i.e., communication theory), (2) heritable information acquired by variation and natural selection, (3) non-heritable learned or creative information, and (4) measured physical information in the context of natural laws. High information storage capacity is most reliably implemented by discrete linear sequences of non-dynamic vehicles, while the execution of information for control and construction is a non-holonomic dynamic process. The first epistemic cut occurs in self-replication. The first interpretation of base sequence information is by protein folding; the last interpretation of base sequence information is by natural selection. Evolution has evolved senses and nervous systems that acquire non-heritable information, and only very recently after billions of years, the competence for human language. Genetic and human languages are the only known complete general purpose languages. They have fundamental properties in common, but are entirely different in their acquisition, storage and interpretation. (shrink)
Philosophers intent upon characterizing the difference between physics and biology often seize upon the purported fact that physical explanations conform more closely to the covering law model than biological explanations. Central to this purported difference is the role of laws of nature in the explanations of these two sciences. However, I argue that, although certain important differences between physics and biology can be highlighted by differences between physical and biological explanations, these differences are not differences in the (...) degree to which those explanations conform to the covering law model, which fits biology about as well as it does physics. (shrink)
In this paper I discuss the relationship between model, theories, and laws in the practice of experimental scale modeling. The methodology of experimental scale modeling, also known as physical similarity, differs markedly from that of other kinds of models in ways that are important to issues in philosophy of science. Scale models are not discussed in much depth in mainstream philosophy of science. In this paper, I examine how scale models are used in making inferences. The main question (...) I address in this talk is ``How are fundamental laws involved in the construction of, and inferences drawn from, experimental scale models?'' We shall see that there is a refreshing alternative to the mainstream view that models can serve only as intermediaries between theory and experiment. Using the methodology of scale models, one can use observations on one piece of the world to make inferences about another piece of the world, without involving an intermediate abstract model about which one reasons. The philosophical significance of that point to philosophy of science is that the method of physical similarity, which provides the basis for inferences based upon scale models, is a qualitatively different way in which fundamental laws can be used in analogical reasoning that is truly informative. Finally, as this method provides a formal basis for case-based reasoning, it may be helpful in formalizing methods used in some of the so-called ``special sciences''. (shrink)
We review studies on catching that reveal internalization of physics for action control. In catching free-falling balls, an internal model of gravity is used by the brain to time anticipatory muscle activation, modulation of reflex responses, and tuning of limb impedance. An internal model of the expected momentum of the ball at impact is used to scale the amplitude of anticipatory muscle activity. [Barlow; Hecht; Shepard].
Experiments show that psi differs from known physical processes in a variety of ways, and these differences are described herein. Because of these, psi cannot be accounted for in terms of presently known physicallaws. A number of theories, of which we review a sampling, suggest ways in which known physicallaws might be expanded in order to account for psi. However, there is no agreement on which of these theories, if any, will ultimately provide (...) a general explanation. A further problem in studying psi is that it is elusive, i.e., methods are not presently known by which it can be reliably produced. However, if psi is real, its study can open the door to a new frontier of knowledge and contribute to our understanding of consciousness. (shrink)
It is assumed that mental action, such as free will, exists, and an exploration is made of its relationship to the brain, physicallaws, and evolutionary selection. If the assumption is made that all content of conscious experience is encoded in the brain, it follows that free will must act as process only. This result is consistent with the experimental results of Libet and others that if free will exists, it must act by making a selection between alternatives (...) provided by the brain. Also, proposals for some additional actions of consciousness, besides free will, are reviewed. The use of mental action by consciousness is not in accord with presently known physics, in which physical changes are either deterministic or random, and an extension would have to be made to known physics to account for physical changes produced by such an action. However, such an extension could be fairly simple in overview, such as the assumption that consciousness can produce the ordering of randomness. Examples of several such theories are given. If consciousness can make selections among programs in the brain/nervous system, and thereby contribute to the formation of behavior, less programming would be needed, especially in situations affected by a variety of types of factors. For this reason consciousness might be present early in the evolutionary line for animals that explore new territory. Emotions and cognitive ability, even though determined by the brain, could be viewed as “choice guiders,” and for this reason their presence in an animal would indicate the presence of consciousness. (shrink)
This volume explores the themes of vanishing matter, matter and the laws of nature, the qualities of matter, and the diversity of the debates about matter in the early modern period.
Abstract Nominalists, denying the reality of anything over and above concreta, are committed to a reductive account of any law of nature, explaining its necessity?the fact that it not only holds for all actual instances, but would hold for any additional ones?in, for example, epistemic terms (its likelihood/certainty of holding beyond the already observed instances). Nominalists argue that the world would be no different without irreducible modalities. ?Modal realists? often object that this parallels a common phenomenalist argument against believing in (...) a mind?independent external world. However, phenomenalism without translatability into sensory language is incoherent, though any such translation is impossible. The ?as if philosophy is untenable as well. But it is quite possible to formulate inductive methodology's imperatives in non?modal terms. Modal realism purports to give a reason against inductive scepticism, but does not go beyond saying that there is one. (shrink)
Hodgkin and Huxley’s model of the action potential is an apparent dream case of covering‐law explanation in biology. The model includes laws of physics and chemistry that, coupled with details about antecedent and background conditions, can be used to derive features of the action potential. Hodgkin and Huxley insist that their model is not an explanation. This suggests either that subsuming a phenomenon under physicallaws is insufficient to explain it or that Hodgkin and Huxley were wrong. (...) I defend Hodgkin and Huxley against Weber’s heteronomy thesis and argue that explanations are descriptions of mechanisms. †To contact the author, please write to: Department of Philosophy, Philosophy‐Neuroscience‐Psychology Program, Washington University in St. Louis, One Brookings Drive, Wilson Hall, St. Louis, MO 63130; e‐mail: ccraver@artsci.wustl.edu. (shrink)
Terence Horgan and John Tienson claim that folk psychological laws are different in kind from basic physicallaws in at least two ways: first, physicallaws do not possess the kind of ceteris paribus qualifications possessed by folk psychological laws, which means the two types of laws have different logical forms; and second, applied physicallaws are best thought of as being about an idealized world and folk psychological laws about (...) the actual world. I argue that Horgan and Tienson have not made a persuasive case for either of the preceding views. (shrink)
The Concept of Physical Law is an original and creative defense of the Regularity theory of physical law, the concept that physicallaws are nothing more than descriptions of whatever universal truths happen to be instanced in nature. Professor Swartz clearly identifies and analyzes the arguments and intuitions of the opposing Necessitarian theory, and argues that the standard objection to the Regularity theory turns on a mistaken view of what Regularists mean by 'physical impossibility'; that (...) it is impossible to construct an empirical test that can distinguish between events Necessitarians call 'mere accidents' and those they call 'nornologically necessary', and that the Necessitarian theory cannot account fot human beings' free wills. Other topics in this important work include: the distinction between instrumental scientific laws and true physicallaws; the distinction between failure and doom; potentialities; miracles and marvels; predictability and uniformity; statistical and numerical laws; and necessity-in-praxis. (shrink)
Are the laws of nature real? Do they belong to the world or merely reflect the way we speak about it? And if they are real, what sort of entity are they? These questions have been intensely debated by philosophers. Modern cosmology, however, has given such questions a new twist by introducing a unique perspective on physical reality, the perspective which I shall call the cosmological point of view. In this perspective, the universe as a whole presents itself (...) as a single individual entity that undergoes a radical change with time. Laws of physics, on the other hand, have both local and global significance. They characterize how things behave locally. But they also characterize the entire universe. This suggests an interesting connection between the universe as a whole and what laws of physics hold in this universe. From the cosmological point of view, these two totalities, the laws of physics and the universe, may be related. But how exactly? Are the laws “inscribed” in the fabric of the universe or do they in some sense “precede” it in the order of being? If the latter, what is a “medium,” over and above the physical universe, in which physicallaws are “written”? If the former, are they but a consequence of the universe’s very existence? And if so, how could the laws of physics survive the dramatic change the physical state of the universe underwent in the course of time? (shrink)
Two forms of independent action by consciousness have been proposed by various researchers – free will and holistic processing. (Holistic processing contributes to the formation of behavior through the holistic use of brain programs and encoding.) The well-known experiment of Libet et al. (1983) implies that if free will exists, its action must consist of making a selection among alternatives presented by the brain. As discussed herein, this result implies that any physical changes mind can produce in the brain (...) are very small, and this in turn implies that holistic processing would also act to select among brain programs. The latter process would contribute to flexibility of behavior, which would therefore be an indication of the possible presence of consciousness in an animal. Because locomotion requires response to varying and unpredictable conditions, the above conclusions support the idea that simple forms of consciousness appear very early in the evolutionary line of the animal kingdom. (shrink)
An influential position in the philosophy of biology claims that there are no biological laws, since any apparently biological generalization is either too accidental, fact-like or contingent to be named a law, or is simply reducible to physicallaws that regulate electrical and chemical interactions taking place between merely physical systems. In the following I will stress a neglected aspect of the debate that emerges directly from the growing importance of mathematical models of biological phenomena. My (...) main aim is to defend, as well as reinforce, the view that there are indeed laws also in biology, and that their difference in stability, contingency or resilience with respect to physicallaws is one of degrees, and not of kind . (shrink)
The finite age of the universe and the existence of cosmological horizons provides a strong argument that the observable universe represents a finite causal region with finite material and informational resources. A similar conclusion follows from the holographic principle. In this paper I address the question of whether the cosmological information bound has implications for fundamental physics. Orthodox physics is based on Platonism: the laws are treated as infinitely precise, perfect, immutable mathematical relationships that transcend the physical universe (...) and remain totally unchanged by physical processes, however extreme. If instead the laws of physics are regarded as akin to computer software, with the physical universe as the corresponding hardware, then the finite computational capacity of the universe imposes a fundamental limit on the precision of the laws and the specifiability of physical states. That limit depends on the age of the universe. I examine how the imprecision of the laws impacts on the evolution of highly entangled states and on the problem of dark energy. (shrink)
The paper argues against the widely accepted assumption that the causal laws of (completed) physics, in contrast to those of the special sciences, are essentially strict. This claim played an important role already in debates about the anomalousness of the mental, and it currently experiences a renaissance in various discussions about mental causation, projectability of special science laws, and the nature of physicallaws. By illustrating the distinction with some paradigmatic physicallaws, the paper (...) demonstrates that only law schemata are strict whereas causal laws are generally non-strict. Several potential replies to this argument are discussed and rejected as unsound. (shrink)
A model is presented to show how the existence of physical law could be a reasonable consequence of Divine Immanence in the world of natural phenomena. Divine Immanence is seen as the continual production of the principal causes or dispositions which enable created things to act and change. It..
Alexander Bird argues that David Armstrong’s necessitarian conception of physical modality and laws of nature generates a vicious regress with respect to necessitation. We show that precisely the same regress afflicts Bird’s dispositional-monist theory, and indeed, related views, such as that of Mumford and Anjum. We argue that dispositional monism is basically Armstrongian necessitarianism modified to allow for a thesis about property identity.
In this paper, I want to explore the question of whether or not there are laws in psychology. Jaegwon Kim has argued (Supervenience and mind. MIT press, Cambridge; 1993; Mind in a physical world. MIT press, Cambridge 1998) that there are no laws in psychology that contain reference to multiply realized kinds, because statements about such kinds fail to be projectible. After reviewing Kim’s argument for this claim, I show how his conclusion hinges on a hidden assumption: (...) that a kind can only feature in a projectible statement if it is defined by an internal physical property. This assumption, however, is false: constrained kinds can feature in projectible statements, and yet they are not defined by any set of internal physical properties. I suggest that many mental terms actually refer to constrained kinds, and give an example from motor neuroscience of a constrained kind that is multiply realizable and “projectible”: the intention to move voluntarily in a specific direction. (shrink)
In this paper I analyze the difficult question of the truth of mature scientific theories by tackling the problem of the truth of laws. After introducing the main philosophical positions in the field of scientific realism, I discuss and then counter the two main arguments against realism, namely the pessimistic metainduction and the abstract and idealized character of scientific laws. I conclude by defending the view that well-confirmed physical theories are true only relatively to certain values of (...) the variables that appear in the laws. (shrink)
The paper discusses Ted Honderich's ?Hypothesis of Psychoneural Correlation?, one of the three fundamental ?hypotheses? of his Theory of Determinism. This doctrine holds that there is a pervasive system of psychoneural laws connecting every mental event with a neural correlate. Various questions are raised and discussed concerning the formulation of the thesis, Honderich's concepts of ?mental? and ?physical?, and the possible grounds for accepting the thesis. Finally, Honderich's response to Donald Davidson's well?known arguments for psychophysical anomalism is discussed.
In this sequence of philosophical essays about natural science, the author argues that fundamental explanatory laws, the deepest and most admired successes of modern physics, do not in fact describe regularities that exist in nature. Cartwright draws from many real-life examples to propound a novel distinction: that theoretical entities, and the complex and localized laws that describe them, can be interpreted realistically, but the simple unifying laws of basic theory cannot.
This paper argues that throughout his intellectual career, Hobbes remains unsatisfied with his own attempts at proving the invariant advisability of contract-keeping. Not only does he see himself forced to abandon his early idea that contractual obligation is a matter of physicallaws. He also develops and retains doubts concerning its theoretical successor, the doctrine that the obligatoriness characteristic of contracts is the interest in self-preservation in alliance with instrumental reason - i.e. prudence. In fact, it is during (...) his work on Leviathan that Hobbes notes the doctrine's main shortcoming, namely the limitation of its dialectical potential to cases in which contract-breakers are publicly identifiable. This essay shows Hobbes's doubts about his Leviathan's treatment of contractual obligation by way of a close reading of its central 15 th chapter and an analysis of some revealing shifts between the English Leviathan and the (later) Latin edition. The paper ends by suggesting that Hobbes's awareness of the flaws at the heart of his political philosophy helps account for some striking changes in his latest writings. (shrink)
Laws of nature take center stage in philosophy of science. Laws are usually believed to stand in a tight conceptual relation to many important key concepts such as causation, explanation, confirmation, determinism, counterfactuals etc. Traditionally, philosophers of science have focused on physicallaws, which were taken to be at least true, universal statements that support counterfactual claims. But, although this claim about laws might be true with respect to physics, laws in the special sciences (...) (such as biology, psychology, economics etc.) appear to have—maybe not surprisingly—different features than the laws of physics. Special science laws—for instance, the economic law “Under the condition of perfect competition, an increase of demand of a commodity leads to an increase of price, given that the quantity of the supplied commodity remains constant” and, in biology, Mendel's Laws—are usually taken to “have exceptions”, to be “non-universal” or “to be ceteris paribus laws”. How and whether the laws of physics and the laws of the special sciences differ is one of the crucial questions motivating the debate on ceteris paribus laws. Another major, controversial question concerns the determination of the precise meaning of “ceteris paribus”. Philosophers have attempted to explicate the meaning of ceteris paribus clauses in different ways. The question of meaning is connected to the problem of empirical content, i.e., the question whether ceteris paribus laws have non-trivial and empirically testable content. Since many philosophers have argued that ceteris paribus laws lack empirically testable content, this problem constitutes a major challenge to a theory of ceteris paribus laws. (shrink)
The status of fundamental laws is an important issue when deciding between the three broad ontological options of fundamentalism (of which the thesis that physics is complete is typically a sub-type), emergentism, and disorder or promiscuous realism. Cartwrights assault on fundamental laws which argues that such laws do not, and cannot, typically state the facts, and hence cannot be used to support belief in a fundamental ontological order, is discussed in this context. A case is made in (...) defence of a moderate form of fundamentalism, which leaves open the possibility of emergentism, but sets itself against the view that our best ontology is disordered. The argument, taking its cue from Bhaskar, relies on a consideration of the epistemic status of experiments, and the question of the possible generality of knowledge gained in unusual or controlled environments. (shrink)
The most recent challenge to the covering-law model of explanation (N. Cartwright, How the laws of Physics Lie) charges that the fundamental explanatory laws are not true. In fact explanation and truth are alleged to pull in different directions. We hold that this gets its force from confusing issues about the truth of the laws in the explanation and the precision with which those laws can yield an exact description of the event to be explained. In (...) defending this we look at Cartwright's major case studies and sketch an amended covering-law model of explanation. (shrink)
Structural analogies between physicallaws have received considerable attention from philosospheres of science. This paper, however, focusses on structural analogies between physical systems; this type of analogy plays an important role in the physical and technological sciences. A formal, set-theoretic description of structural analogies between physical systems is presented, and it is shown that a structural analogy between systems does not require a structural analogy with regard to the laws involved, nor conversely.
Abstract: In this paper, my main objective is to investigate the nature of a priori biological laws in connection with the idea that laws must be empirical. I argue that functions of so-called a priori biological laws in biological sciences are the same as those of empirical physicallaws. Thus, the requirement of being empirical makes no difference how laws operate in sciences. This result presents us a choice between sticking with a philosophical requirement (...) of laws being empirical or taking functional equivalences of laws seriously and modify our philosophical accounts of laws. I favor the latter. The paper consists of 4 sections. In section 1, I define the problem and I briefly explain my strategy in addressing it. In section 2, I discuss the relation between explanation and laws. In section 3, I compare a priori biological laws with some physicallaws and I argue that their functions are the same in sciences to which they belong. In section 4, I discuss the implications of my discussions in sections 2 and 3 and I argue that the requirement of empirical is too strong. (shrink)
Philosophers of science nowadays are inclined to believe in physicallaws, but generally, like Hume and Russell, to reject causes. This paper urges the reverse. Explanatory practice in physics argues that we must take literally the causal stories that our theories provide, but the fundamental laws and equations that are essential to modern science are merely instrumental.
What are laws of nature? During much of the eighteenth and nineteenth centuries Newton’s laws of motion were taken to be the paradigm of scientific laws thought to constitute universal and necessary eternal truths. But since the turn of the twentieth century we know that Newton’s laws are not universally valid. Does this mean that their status as laws of physics has changed? Have we discovered that the principles, which were once thought to be (...) class='Hi'>laws of nature, are not in fact laws? (shrink)
INTERNATIONAL STUDIES IN THE PHILOSOPHY OF SCIENCE Vol. 5, number 1, Autumn 1991, pp. 79-87. R.M. Nugayev. -/- The fundamental laws of physics can tell the truth. -/- Abstract. Nancy Cartwright’s arguments in favour of phenomenological laws and against fundamental ones are discussed. Her criticisms of the standard cjvering-law account are extended using Vyacheslav Stepin’s analysis of the structure of fundamental theories. It is argued that Cartwright’s thesis 9that the laws of physics lie) is too radical to (...) accept. A model of theory change is proposed which demonstrates how the fundamental laws of physics can, in fact, be confronted with experience. -/- . (shrink)
It has been argued that the fundamental laws of physics are deceitful in that they give the impression of greater unity and coherence in our theories than is actually found to be the case. Causal stories and phenomenological relationships are claimed to provide a more acceptable account of the world, and only theoretical entities — not laws — are considered as perhaps corresponding to real features of the world.This paper examines these claims in the light of the author's (...) own field of research: high energy physics. Some of the distinctions upon which the above conclusions are based are found not to be tenable in practice. Examples from experimental particle physics are presented which suggest an important role of the underlying theoretical structure which cannot be overlooked. It is argued that the fundamental theories must, in fact, be treated as being as worthy or unworthy of ontological commitment as the entities they postulate or the phenomenological relationships they inspire. Whilst it is conceded that aspects of the current theoretical formalism belie literal interpretation, it is maintained that revision in these particular areas need not affect the symmetry principles, particle spectra, or coupling strengths that largely determine the empirical content of the theory. (shrink)
Conceptual problems for consciousness are analogous to a Humean’s problem with scientific laws. Just as consciousness is often seen to involve further facts beyond the physical, laws would seem to involve reality beyond the Humean’s occurrent facts1. I will attempt to show that a Lewis-style best-system solution to the problem for laws should be applied to the related problem for consciousness. The leading idea of a best-system account is that law and chance claims are true in (...) virtue of their place in ideal systematic treatment of the totality of occurrent fact. Nomic facts about law and chance, then, are not “further facts” beyond the occurrent; rather they are a matter of idealized scientific theory. (shrink)
Keywords: cosmology, laws, non-equilibrium thermodynamics, information, time, evolution ABSTRACT A major goal of science is to discover laws that underlie all regular phenomena. This goal is best satisfied by eternal principles that leave fundamental properties unchanged and unchangeable. Science has been forced to accept that some processes, especially biological processes, are inherently time oriented. It can either forgo the ideal of universal principles, and account for temporality through specific boundary conditions, or else incorporate the sources of change directly (...) into fundamental principles that are the same for all times and places, and for all temporal scales. In the past, unifying principles adequate for biology have caused trouble for physics, and vice versa. Recent work at the intersection of non-equilibrium statistical mechanics and information theory suggests that physics and biology can finally be reconciled. (shrink)
This paper proposes a novel response to Nancy Cartwright’s famous argument that fundamental physicallaws, such as Newton’s law of gravitation, are ceteris paribus: construing forces instrumentally allows such laws to apply generally, eliminating the need for ceteris paribus clauses. The instrumental construal of forces is motivated, and defended against prominent recent objections. Further, it is argued that such instrumentalism in no way undermines the role of force-laws in scientific practise, and indeed, is compatible with a (...) robust realism about force-laws. (shrink)
I develop a variant of the constraint interpretation of the emergence of purely physical (non-biological) entities, focusing on the principle of the non-derivability of actual physical states from possible physical states (physicallaws) alone. While this is a necessary condition for any account of emergence, it is not sufficient, for it becomes trivial if not extended to types of constraint that specifically constitute physical entities, namely, those that individuate and differentiate them. Because physical (...) organizations with these features are in fact interdependent sets of such constraints, and because such constraints on physicallaws cannot themselves be derived from physicallaws, physical organization is emergent. These two complementary types of constraint are components of a complete non-reductive physicalism, comprising a non-reductive materialism and a non-reductive formalism. (shrink)
Nearly 30 years have passed since Donald Davidson first presented his ar- gument against the possibility of psychophysical laws in “Mental Events”. The argument applies to intentional rather than phenomenal properties, so whenever I refer to mental properties and to psychophysical laws it should be understood that I mean intentional properties and laws relating them to physical properties. No consensus has emerged over what the argument actually is, and the subsequent versions of it presented by Davidson (...) show significant differences. But many have been inclined to agree with the spirit of the argument and with its conclusion. (shrink)
Abraham Pais's Subtle Is the Lord was a publishing phenomenon: a mathematically sophisticated exposition of the science and the life of Albert Einstein that reached a huge audience and won an American Book Award. Reviewers hailed the book as "a monument to sound scholarship and graceful style" (The New York Times Book Review), "an extraordinary biography of an extraordinary man" (Christian Science Monitor), and "a fine book" (Scientific American). In this groundbreaking new volume, Pais undertakes a history of the physics (...) of matter and of physical forces since the discovery of x-rays. The book attempts to relate not only what has happened over the last hundred years but why it happened the way it did, what it was like for those scientists involved, and how what at the time may have seemed a series of bizarre or unrelated events, now with hindsight emerges as a logical sequence of events. Pais, a noted physicist, was personally involved in many of the developments he describes, and thus Inward Bound , like his earlier book, is filled with unique insights into the world of big and small physics. Between 1895 and 1983, the period he covers, the smallest distances explored have shrunk a hundred millionfold, Pais notes. Along this incompletely traveled "road inward," scientists have established markers that later generations will rank among the principal monuments of the twentieth century. In alternating technical and nontechnical sections, this magisterial survey richly conveys what has been discovered about the constituents of matter, the laws to which they are subject, and the forces that act on them. But the advances have certainly not come smoothly. The book shows that these have been times of progress and stagnation, of order and chaos, of clarity and confusion, of belief and incredulity, of the conventional and the bizarre; also of revolutionaries and conservatives, of science by individuals and by consortia, of little gadgets and big machines, and of modest funds and big money. About the Author: Abraham Pais is Detlev W. Bronk Professor of Physics at the Rockefeller University. The author of the prizewinning biography of Einstein now undertakes a history of modern physics. (shrink)
Where to begin? I’ll take three books from my shelves. First, now nearly forty years old, a little book of television lectures by the great physicist Richard Feynman, The Character of Physical Law. He talks about the laws of motion, the inverse square law of gravitation, conservation laws, symmetry principles and the various ways these all hang together. Feynman obviously takes it that it is a prime aim of science to discover such laws. But what are (...)laws? He writes – and this is about his one and only shot at a characterization at the level of abstraction that we might think of as philosophical –. (shrink)
I present a novel objection to fine-tuning arguments for God's existence: the metaphysical possibility of different psychophysical laws allows any values of the physical constants to support intelligent life forms, like protons and electrons in love.
Metaphysicians play an important role in our understanding of the universe. In recent years, physicists have focussed on finding accurate mathematical formalisms of the evolution of our physical system - if a metaphysician can uncover the metaphysical underpinnings of these formalisms; that is, why these formalisms seem to consistently map the universe, then our understanding of the world and the things in it is greatly enhanced. Science, then, plays a very important role in our project, as the best scientific (...) formalisms provide us with what we, as metaphysicians, should be trying to interpret. In this thesis I examine existing metaphysical views of what a law is (both from a conceptual and from a metaphysical perspective), to show how closely causation is linked to laws, and to provide a priori arguments for and against each of these positions. Ultimately, I aim to provide an analysis of a number of metaphysics of natural laws and causation, apply these accounts to our best scientific theories, and see how these metaphysics fit in with our concepts of cause and law. Although I do not attempt a definitive metaphysical account myself, I conclude that any successful metaphysic will be a broadly Humean one, and furthermore that given the concepts of cause and law that shall be agreed upon, Humean theories allow for there to be causal sequences and laws (in line with our concepts) in the world. (shrink)
1. Of what use is the concept of causation? Bertrand Russell [1912-13] argued that it is not useful: it is “a relic of a bygone age, surviving, like the monarchy, only because it is erroneously supposed to do no harm.” His argument for this was that the kind of physical theories that we have come to regard as fundamental leave no place for the notion of causation: not only does the word ‘cause’ not appear in the advanced sciences, but (...) the laws that these sciences state are incompatible with causation as we normally understand it. But Nancy Cartwright has argued [1979] that abandoning the concept of causation would cripple science; her conclusion was based not on fundamental physics, but on more ordinary science such as the search for the causes of cancer. She argues that Russell was right that the fundamental theories of modern physics say nothing, even implicitly, about causation, and concludes on this basis that such theories are incomplete. It is with this cluster of issues that I will begin my discussion. (shrink)
Many philosophers of science think that most laws of nature (even those of fundamental physics) are so called ceteris paribus laws, i.e., roughly speaking, laws with exceptions. Yet, the ceteris paribus clause of these laws is problematic. Amongst the more infamous difficulties is the danger that 'For all x: Fx ⊃ Gx, ceteris paribus' may state no more than a tautology: 'For all x: Fx ⊃ Gx, unless not'. One of the major attempts to avoid this (...) problem (and others concerning ceteris paribus laws) is to claim that the subject matter of laws are ascriptions of dispositions, powers, capacities etc., and not the regular behaviour we find in nature. That we do not know whether the cetera are paria in a specific situation does not matter to the dispositionalist because the objects have the disposition regardless of the circumstances. The defence of the latter claim is that dispositions can be instantiated without being manifested. Hence, the laws that ascribe dispositions are strict and it looks as if they do not face the above mentioned problems of ceteris paribus laws. In this essay I attempt to show that these assumptions are wrong. I hope to illustrate that not only does the ceteris paribus clause reoccur inside the dispositions, moreover, there are laws—laws about non-fundamental entities with instable dispositions—which bear a ceteris paribus clause that cannot be hidden in a disposition. (shrink)
This book is written by someone who holds that physics and the metaphysics of cause and law broadly strive to achieve a common goal: to undstand what our physical system is constituted by, and both how, and why it evolves in the way that it does. It seems to me that the primary tools of the scientist are empirical evidence, mathematics, and although this is perhaps less appreciated, imagination - these are fundamental to any great scientific breakthrough. For us, (...) the metaphysicians, imagination, science, and a priori reasoning form the foundation of our enquiries. I believe that for the metaphysician, reasoning without due consideration of science will inevitably lead to unjustified, and probably false conclusions. In this thesis I provide an analysis of a number of metaphysics of cause and law, as well as a conceptual analysis of both, to show how closely a consistent account of causation must be linked with laws of nature. I then attempt to give metaphysics explanations of our best scientific theories(in particular, least action principles and the general theory of relativity) in terms of the metaphysical views discussed, in order to judge their compatibility with science. I conclude that any successful metaphysic will be a broadly Humean one. (shrink)
Discussions of the metaphysical status of spacetime assume that a spacetime theory offers a causal explanation of phenomena of relative motion, and that the fundamental philosophical question is whether the inference to that explanation is warranted. I argue that those assumptions are mistaken, because they ignore the essential character of spacetime theory as a kind of physical geometry. As such, a spacetime theory does notcausally explain phenomena of motion, but uses them to construct physicaldefinitions of basic geometrical structures by (...) coordinating them with dynamical laws. I suggest that this view of spacetime theories leads to a clearer view of the philosophical foundations of general relativity and its place in the historical evolution of spacetime theory. I also argue that this view provides a much clearer and more defensible account of what is entailed by realism concerning spacetime. (shrink)
Normic laws have the form "if A, then normally B." They are omnipresent in everyday life and non-physical 'life' sciences such as biology, psychology, social sciences, and humanities. They differ significantly from ceteris-paribus laws in physics. While several authors have doubted that normic laws are genuine laws at all, others have argued that normic laws express a certain kind of prototypical normality which is independent of statistical majority. This paper presents a foundation for normic (...)laws which is based on generalized evolution theory and explains their omnipresence, lawlikeness, and reliability. It is argued that the fact that normic laws are a product of evolution must establish a systematic connection between prototypical and statistical normality. (shrink)
The emphasis on models hasn’t completely eliminated laws from scientific discourse and philosophical discussion. Instead, I want to argue that much of physics lies beyond the strict domain of laws. I shall argue that in important cases the physics, or physical understanding, does not lie either in laws or in their properties, such as universality, consistency and symmetry. I shall argue that the domain of application commonly attributed to laws is too narrow. That is, (...) class='Hi'>laws can still play an important, though peculiar, role outside their strict domain of validity. I shall argue also that, by way of a trade-off, while the actual domain of application of laws should be seen as much broader. At the same time, what I call ‘anomic’ representational elements reveal themselves as central to the descriptive and explanatory power of theories and model: boundary conditions, state descriptions, structures, constraints, limits and mechanisms. I conclude with a brief consideration of how my discussion has consequences for discussion of understanding, unification, approximation and dispositional properties. I focus on examples from physics, macroscopic and microscopic, phenomenological and fundametal: shock waves, propagation of cracks, symmetry breaking, and others. This law-eccentric kind of knowledge is central to both modeling the world and intervening in it. (shrink)
Laws are supposed to tell us how physical systems actually behave. The analysis of an important part of physical practice--abstraction--shows, however, that laws describe the behavior of physical systems under very special circumstances, namely when they are isolated. Nevertheless, laws are applied in cases of non-isolation as well. This practice requires an explanation. It is argued that one has to assume that physical systems have dispositions. I take these to be innocuous from an (...) empiricist's standpoint because they can--at least in principle--be measured. Laws can be applied whenever such a disposition is present, they describe how the physical system would behave if the disposition were manifest. (shrink)
The conservation laws do not establish the central premise within the argument from causal overdetermination – the causal completeness of the physical domain. Contrary to David Papineau (2000 and 2002), this is true even if there is no non-physical energy. The combination of the conservation laws with the claim that there is no non-physical energy would establish the causal completeness principle only if, at the very least, two further causal claims were accepted. First, the claim (...) that the only way that something non-physical could affect a physical system is by (1) affecting the amount of energy or momentum within it, or (2) redistributing the energy and momentum within it. Second, the claim that redistribution of energy and momentum cannot be brought about without supplying energy or momentum. Both of these claims, however, are exceedingly difficult to defend in the context of the argument. (shrink)
It has not been sufficiently considered in philosophical discussions of ceteris paribus (CP) laws that distinct kinds of CP-laws exist in science with rather different meanings. I distinguish between (1.) comparative CP-laws and (2.) exclusive CP-laws. There exist also mixed CP-laws, which contain a comparative and an exclusive CP-clause. Exclusive CP-laws may be either (2.1) definite, (2.2) indefinite or (2.3) normic. While CP-laws of kind (2.1) and (2.2) exhibit deductivistic behaviour, CP-laws of (...) kind (2.3) require a probabilistic or non-monotonic reconstruction. CP-laws of kind (1) may be both deductivistic or probabilistic. All these kinds of CP-laws have empirical content by which they are testable, except CP-laws of kind (2.2) which are almost vacuous. Typically, CP-laws of kind (1) express invariant correlations, CP-laws of kind (2.1) express closed system laws of physical sciences, and CP-laws of kind (2.3) express normic laws of non-physical sciences based on evolution-theoretic stability properties. (shrink)
Many philosophers have believed that the laws of nature differ from the accidental truths in their invariance under counterfactual perturbations. Roughly speaking, the laws would still have held had q been the case, for any q that is consistent with the laws. (Trivially, no accident would still have held under every such counterfactual supposition.) The main problem with this slogan (even if it is true) is that it uses the laws themselves to delimit qs range. I (...) present a means of distinguishing the laws (and their logical consequences) from the accidents, in terms of their range of invariance under counterfactual antecedents, that does not appeal to physical modalities (or any cognate notion) in delimiting the relevant range of counterfactual perturbations. I then argue that this approach explicates the sense in which the laws possess a kind of necessity. (shrink)
The modern sciences are divided into two groups: law-formulating and natural historical sciences. Sciences of both groups aim at describing the world, but they do so differently. Whereas the natural historical sciences produce “transcriptions” intended to be literally true of actual occurrences, laws of nature are expressive symbols of aspects of the world. The relationship between laws and the world thus resembles that between the symbols of classical iconography and the objects for which they stand. The natural historical (...) approach was founded by Aristotle and is retained in such present-day sciences as botany. Modern physics differentiated itself from the natural historical sciences and developed a symbolizing approach at the hands of Galileo and Descartes. Our knowledge of the physical domain is provided by two disciplines: the law-formulating science of physics and a natural historical science on which we depend in the everyday manipulation of our surroundings. (shrink)
Most scientists would hold that science has not established that the cosmos is physically comprehensible – i.e. such that there is some as-yet undiscovered true physical theory of everything that is unified. This is an empirically untestable, or metaphysical thesis. It thus lies beyond the scope of science. Only when physics has formulated a testable unified theory of everything which has been amply corroborated empirically will science be in a position to declare that it has established that the cosmos (...) is physically comprehensible. But this argument presupposes a widely accepted but untenable conception of science which I shall call standard empiricism. According to standard empiricism, in science theories are accepted solely on the basis of evidence. Choice of theory may be influenced for a time by considerations of simplicity, unity, or explanatory capacity, but not in such a way that the universe itself is permanently assumed to be simple, unified or physically comprehensible. In science, no thesis about the universe can be accepted permanently as a part of scientific knowledge independently of evidence. Granted this view, it is clear that science cannot have established that the universe is physically comprehensible. Standard empiricism is, however, as I have indicated, untenable. Any fundamental physical theory, in order to be accepted as a part of theoretical scientific knowledge, must satisfy two criteria. It must be (1) sufficiently empirically successful, and (2) sufficiently unified. Given any accepted theory of physics, endlessly many empirically more successful disunified rivals can always be concocted – disunified because they assert that different dynamical laws govern the diverse phenomena to which the theory applies. These disunified rivals are not considered for a moment in physics, despite their greater empirical success. This persistent rejection of empirically more successful but disunified rival theories means, I argue, that a big, highly problematic, implicit assumption is made by science about the cosmos, to the effect, at least, that the cosmos is such that all seriously disunified theories are false. Once this point is recognized, it becomes clear, I argue, that we need a new conception of science which makes explicit, and so criticizable and improvable the big, influential, and problematic assumption that is at present implicit in physics in the persistent preference for unified theories. This conception of science, which I call aim-oriented empiricism, represents the assumption of physics in the form of a hierarchy of assumptions. As one goes up the hierarchy, the assumptions become less and less substantial, and more and more nearly such that their truth is required for science, or the pursuit of knowledge, to be possible at all. At each level, that assumption is accepted which (a) best accords with the next one up, and (b) has, associated with it the most empirically progressive research programme in physics, or holds out the greatest hope of leading to such an empirically progressive research programme. In this way a framework of relatively insubstantial, unproblematic, fixed assumptions and associated methods is created, high up in the hierarchy, within which much more substantial and problematic assumptions and associated methods, low down in the hierarchy, can be changed, and indeed improved, as scientific knowledge improves. One assumption in this hierarchy of assumptions, I argue, is that the cosmos is physically comprehensible – that is, such that some yet-to-be-discovered unified theory of everything is true. Hence the conclusion: improve our ideas about the nature of science and it becomes apparent that science has already established that the cosmos is physically comprehensible – in so far as science can ever establish anything theoretical. (shrink)
Alexander Bird has a two-part argument to the effect that God could only have created a world without physical evil by changing either the laws or the initial conditions of the universe, and that no such world would be at all like ours: so God is not responsible for physical evil. I argue that both parts of his argument fail.
The two books discussed here make important contributions to our understanding of the role of spacetime concepts in physical theories and how that understanding has changed during the evolution of physics. Both emphasize what can be called a ‘dynamical’ account, according to which geometric structures should be understood in terms of their roles in the laws governing matter and force. I explore how the books contribute to such a project; while generally sympathetic, I offer criticisms of some historical (...) claims concerning Newton, and argue that the dynamical account does not undercut ontological issues as the books claim. *Received January 2009; revised March 2009. †To contact the author, please write to: Department of Philosophy, 1423 University Hall MC 267, University of Illinois at Chicago, 601 S. Morgan Street, Chicago, IL 60607; e‐mail: huggett@uic.edu. (shrink)
I identify the special sort of stability (invariance, resilience, etc.) that distinguishes laws from accidental truths. Although an accident can have a certain invariance under counterfactual suppositions, there is no continuum between laws and accidents here; a law's invariance is different in kind, not in degree, from an accident's. (In particular, a law's range of invariance is not "broader"--at least in the most straightforward sense.) The stability distinctive of the laws is used to explicate what it would (...) mean for there to be multiple grades (or degrees) of physical necessity. Whether there are is for science to discover. (shrink)
Kant's views on the epistemological status of physical science provide an important example of how a philosophical system can be applied to understand the foundation of scientific theories. Michael Friedman has made considerable progress towards elucidating Kant's philosophy of science; in particular, he has argued that Kant viewed Newton's law of universal gravitation as necessary for the possibility of experiencing what Kant called true motion, which is more than the mere relative motion of appearances but is different from Newton's (...) concept of absolute motion. In this context, Friedman has provided an account of how Kant must have viewed Newton's supposed derivation of universal gravitation from Kepler's laws, based on, among other things, Kant's claim that Newton really needed to make extra assumptions in order to derive universal gravitation. In this paper, I argue that Friedman's account is incomplete for three reasons. First, Friedman has overlooked an important aspect of how Newton's third law is applied in the relevant sections of the Principia; as a result, Friedman's account partially misconstrues the relation between the planetary phenomena and the theory of universal gravitation. Second, his account fails to account for Kant's apparent belief that Kepler's laws are only empirically-based rules, even though they seem to be necessary for the derivation of universal gravitation and hence also necessary for Kant's own definition of true motion. Third, Friedman has overlooked some remarks by Kant that indicate that Kant thought the crucial properties of universal gravitation could be known without reference to the empirically determined motions of the planets and hence seemingly without any help from Newton. (shrink)
The paper tries to provide an alternative to Hempel’s approach to scientific laws and scientific explanation as given in his D-N model. It starts with a brief exposition of the main characteristics of Hempel’s approach to deductive explanations based on universal scientific laws and analyzes the problems and paradoxes inherent in this approach. By way of solution, it analyzes the scientific laws and explanations in classical mechanics and then reconstructs the corresponding models of explanation, as well as (...) the types of scientific laws appearing in it. Finally, it compares this reconstruction with the approaches of J. Woodward and C. Hitchcock, C. Liu and with the views of M. Thalos on analytic mechanics. (shrink)
I describe a problem about the relations among symmetries, laws and measurable quantities. I explain why several ways of trying to solve it will not work, and I sketch a solution that might work. I discuss this problem in the context of Newtonian theories, but it also arises for many other physical theories. The problem is that there are two ways of defining the space-time symmetries of a physical theory: as its dynamical symmetries or as its empirical (...) symmetries. The two definitions are not equivalent, yet they pick out the same extension. This coincidence cries out for explanation, and it is not clear what the explanation could be. The Puzzle: Symmetries, Measurability and Invariance 1.1 The symmetries and the measurable quantities of Newtonian mechanics 1.2 The puzzle Two Easy Answers Another Unsuccessful Solution: Appeal to Geometrical Symmetries Locating the Puzzle The Relation between Laws and Measurability A Possible Solution CiteULike Connotea Del.icio.us What's this? (shrink)
Two distinct conceptions for the relation between reversible, time-reversal invariant laws of nature and the irreversible behavior of physical systems are outlined. The standard, extrinsic concept of irreversibility is based on the notion of an open system interacting with its environment. An alternative, intrinsic concept of irreversibility does not explicitly refer to any environment at all. Basic aspects of the two concepts are presented and compared with each other. The significance of the terms extrinsic and intrinsic is discussed.
This article is a brief formulation of a radical thesis. We start with the formalist doctrine that mathematical objects have no meanings; we have marks and rules governing how these marks can be combined. That's all. Then I go further by arguing that the signs of a formal system of mathematics should be considered as physical objects, and the formal operations as physical processes. The rules of the formal operations are or can be expressed in terms of the (...)laws of physics governing these processes. In accordance with the physicalist understanding of mind, this is true even if the operations in question are executed in the head. A truth obtained through (mathematical) reasoning is, therefore, an observed outcome of a neuro-physiological (or other physical) experiment. Consequently, deduction is nothing but a particular case of induction. (shrink)
This paper is a sequel to my 'Theological Misinterpretations of Current Physical Cosmology' (Foundations of Physics [1996], 26 (4); revised in Philo [10998], 1 (1)). There I argued that the Big Bang models of (classical) general relativity theory, as well as the original 1948 versions of the steady state cosmology, are each logically incompatible with the time-honored theological doctrine that perpetual divine creation (creatio continuans') is required in each of these two theorized worlds. Furthermore, I challenged the perennial theological (...) doctrine that there must be a divine creative cause (as distinct from a transformative one) for the very existence of the world, a ratio essendi. This doctrine is the theistic reply to the question: 'Why is there something, rather than just nothing?' I begin my present paper by arguing against the response by the contemporary Oxford theist Richard Swinburne and by Leibniz to what is, in effect, my counter-question: 'But why should there by just nothing, rather than something?' Their response takes the form of claiming that the a priori probability of there being just nothing, vis-à-vis the existence of alternative states, is maximal, because the non-existence of the world is conceptually the simplest. On the basis of an analysis of the role of simplicity in scientific explanations, I show that this response is multiply flawed, and thus provides no basis for their three contentions that (i) if there is a world at all, then its 'normal', natural, spontaneous state is one of utter nothingness or total non-existence, so that (ii) the very existence of matter, energy and living beings constitutes a deviation from the allegedly 'normal', spontaneous state of 'nothingness', and (iii) that deviation must thus have a suitably potent (external) divine cause. Related defects turn out to vitiate the medieval Kalam Argument for the existence of God, as espoused by William Craig. Next I argue against the contention by such theists as Richard Swinburne and Philip L. Quinn that (i) the specific content of the scientifically most fundamental laws of nature, including the constants they contain, requires supra-scientific explanation, and (ii) a satisfactory explanation is provided by the hypothesis that the God of theism willed them to be exactly what they are. Furthermore, I contend that the theistic teleological gloss on the 'Anthropic Principle' is incoherent and explanatorily unavailing. Finally, I offer an array of considerations against Swinburne's attempt to show, via Bayes's theorem, that the existence of God is more probable than not. (shrink)
Since the seventeenth century, our understanding of the natural world has been one of phenomena that behave in accordance with natural laws. While other elements of the early modern scientific worldview may be rejected or at least held in question—the metaphor of the world as a great machine, the narrowly mechanist assumption that all physical interactions must be contact interactions, the idea that matter might actually be obeying rules laid down by its Divine Author – the notion of (...) natural law has continued to play a pivotal role in actual scientific practice, in our philosophical interpretations of science, and in their its metaphysical implications. (shrink)
Many have felt that it is impossible to defend autonomous laws of social science: where the regularities upheld are law-like it is argued that they are not at base social scientific, and where the phenomena to be explained would seem to require social descriptions, it is argued that laws governing the phenomena are unavailable at that level. But is it possible to develop an ontology that supports the dependence of the social on the physical, while nonetheless supporting (...) the explanatory power of genuinely autonomous social scientific laws? The aim of this paper is to show that reductive explanation is not a requirement of a `naturalist' ontology, thereby defending an account of supervenience as a suitable framework within which to recognize a metaphysical relationship between the natural and the social that is consistent with the pursuit of autonomous nomological social scientific explanations. (shrink)
The initial part of this paper explores and rejects three standard views of how scientific laws might be systematically connected with physical necessity or possibility. The first concerns laws and their consequences, the second concerns the so‐called counterfactual connection, and the third concerns a possible worlds construction of physical necessity. The remaining part introduces a neglected notion of possibility, and, with the aid of some examples, illustrates the special way in which laws reduce or narrow (...) down possibilities. (shrink)
It is common in the literature on electrodynamics and relativity theory that the transformation rules for the basic electrodynamical quantities are derived from the hypothesis that the relativity principle (RP) applies for Maxwell's electrodynamics. As it will turn out from our analysis, these derivations raise several problems, and certain steps are logically questionable. This is, however, not our main concern in this paper. Even if these derivations were completely correct, they leave open the following questions: (1) Is (RP) a true (...) law of nature for electrodynamical phenomena? (2) Are, at least, the transformation rules of the fundamental electrodynamical quantities, derived from (RP), true? (3) Is (RP) consistent with the laws of electrodynamics in one single inertial frame of reference? (4) Are, at least, the derived transformation rules consistent with the laws of electrodynamics in one single frame of reference? Obviously, (1) and (2) are empirical questions. In this paper, we will investigate problems (3) and (4). First we will give a general mathematical formulation of (RP). In the second part, we will deal with the operational definitions of the fundamental electrodynamical quantities. As we will see, these semantic issues are not as trivial as one might think. In the third part of the paper, applying what J. S. Bell calls “Lorentzian pedagogy”---according to which the laws of physics in any one reference frame account for all physical phenomena---we will show that the transformation rules of the electrodynamical quantities are identical with the ones obtained by presuming the covariance of the coupled Maxwell--Lorentz equations, and that the covariance is indeed satisfied. As to problem (3), the situation is much more complex. As we will see, the relativity principle is actually not a matter of the covariance of the physical equations, but it is a matter of the details of the solutions of the equations, which describe the behavior of moving objects. This raises conceptual problems concerning the meaning of the notion “the same system in a collective motion”. In case of electrodynamics, there seems no satisfactory solution to this conceptual problem; thus, contrary to the widespread views, the question we asked in the title has no obvious answer. (shrink)
The SPP is, among other things, a place where we discuss nagging and perennial problems on the bordermarches between philosophy and the sciences. Sometimes problems are nagging and perennial because they are deep and difficult. And sometimes they are merely an artifact, a shadow cast by our own way of formulating the problem. I should like to suggest to you that philosophy of mind suffers badly from being the last refuge of the best philosophy of science of the 1950's, and (...) that some of its problems are in fact illusions that could be dispelled by consideration of more recent developments in the philosophy of science. In particular, philosophy of psychology has been plagued by a famous contrast between its "ceteris paribus" laws and the "exceptionless" laws of the physical sciences. This has led to doubts about the scientific status of psychology, the status of psychological kinds as natural kinds, and even their ontological legitimacy. I argue here that this problematic is a consequence of assuming a particular analysis of scientific laws as (exceptionless) universally quantifed claims. This analysis has largely been rejected in contemporary philosophy of science. And more recent analyses that take notice of the role of idealization in scientific modeling both dissolve the nagging problem and shed new light upon differences between the sciences. (shrink)
Alexander Bird argues that David Armstrong’s necessitarian conception of physical modality and laws of nature generates a vicious regress with respect to necessitation. We show that precisely the same regress afflicts Bird’s dispositional-monist theory, and indeed, related views, such as that of Mumford and Anjum. We argue that dispositional monism is basically Armstrongian necessitarianism modified to allow for a thesis about property identity.
Cabe argumentar en favor del fisicismo a partir de consideraciones metodológicas o epistémicas, o desde un punto de vista ontológico. En los últimos años se ha venido presentando un potente argumento ontológico que hace un uso esencial de lo que se ha dado en llamar el "principio del cierre causal del mundo físico". En este artículo examino si es posible que sea la propia física quien fundamente este principio. Propongo que, con la ayuda de las contemporáneas teorías reductivas de la (...) causalidad a intercambio o transferencia de cantidades conservadas, las leyes de conservación pueden proporcionar tal fundamento. También evalúo qué fuerza modal puede tener este principio del cierre. /// It is possible to argue for physicalism from methodological or epistemic considerations or from an ontological position. In the last years one can find a powerful ontological argument for physicalism which makes essential use of what has been labeled "the principle of the causal closure of the physical world". In this paper I examine whether this principle can be grounded in physics itself. I propose that, with the aid of contemporary reductive transference or exchange theories of causation, conservation laws can provide such a basis to the principle of the causal closure. I also consider what modal force the principle may have. (shrink)
Laws of nature are properly (if controversially) conceived as abstract entities playing a governing role in the physical universe. Dispositionalists typically hold that laws of nature are not real, or at least are not fundamental, and that regularities in the physical universe are grounded in the causal powers of objects. By contrast, I argue that dispositionalism implies nomic realism: since at least some dispositions have ceteris paribus clauses incorporating uninstantiated universals, and these ceteris paribus clauses help (...) to determine their dispositions' ranges of manifestation, there are indeed abstracta which play a governing role in the physical universe. After addressing several objections (including the objection that such ‘laws’ lack sufficient independence/externality from the dispositions to count as genuinely governing), I go on to consider some broader implications of this conclusion for other debates in metaphysics and the philosophy of science.1. (shrink)
With reference to two specific modalities of sensation, the taste of saltiness of chloride salts, and the loudness of steady tones, it is shown that the laws of sensation (logarithmic and power laws) are expressions of the entropy per mole of the stimulus. That is, the laws of sensation are linear functions of molar entropy. In partial verification of this hypothesis, we are able to derive an approximate value for the gas constant, a fundamental physical constant, (...) directly from psychophysical measurements. The significance of our observation lies in the linking of the phenomenon of “sensation” directly to a physical measure. It suggests that if the laws of physics are universal, the laws of sensation and perception are similarly universal. It also connects the sensation of a simple, steady physical signal with the molecular structure of the signal: the greater the number of microstates or complexions of the stimulus signal, the greater the magnitude of the sensation (saltiness or loudness). The hypothesis is currently tested on two sensory modalities. (shrink)
It has been said that Robert Boyle gave in the century of The Scientific Revolution the “fullest expression” of the view that laws of nature are continually impressed by God (“occasionalism”). So regarded, the universe is anything but an autonomous machine, its ordered operation depending on God’s continuous imposition of lawful, patterned relations between phenomena and his continuous provision of motion for them to actually enter relations. The present paper contests this treatment of Boyle. Evidence is elicited to show (...) that, for Boyle, most physical relations issue from intrinsic dispositions of phenomena, not divine impositions, dispositions determined by corpuscular textures. Members of classes of phenomena have capacities to make specific changes which members of other classes have capacities to receive, these correlative capacities being necessarily connected, subjects in principle of a priori synthetic necessary knowledge. The same view is found in John Locke’s Essay Concerning Human Understanding. It is additionally argued that Boyle’s God, the quintessentially active being, imparted motion at the creation, whereafter the motion of (at least most) natural phenomena has derived from natural, not supernatural, impulsion. (shrink)
This article is a brief formulation of a radical thesis. We start with the formalist doctrine that mathematical objects have no meanings; we have marks and rules governing how these marks can be combined. That's all. Then I go further by arguing that the signs of a formal system of mathematics should be considered as physical objects, and the formal operations as physical processes. The rules of the formal operations are or can be expressed in terms of the (...)laws of physics governing these processes. In accordance with the physicalist understanding of mind, this is true even if the operations in question are executed in the head. A truth obtained through (mathematical) reasoning is, therefore, an observed outcome of a neuro-physiological (or other physical) experiment. Consequently, deduction is nothing but a particular case of induction. (shrink)
