Online research in philosophy

According to Tyes PANIC theory of consciousness, perceptualstates of creatures which are related to a disjunction ofexternal contents will fail to represent sensorily, andthereby fail to be conscious states. In this paper I arguethat heat perception, a form of perception neglected in therecent literature, serves as a counterexample to Tyesradical externalist claim. Having laid out Tyes `absentqualia scenario, the PANIC theory from which it derivesand the case of heat perception as a counterexample, Idefend the putative counterexample against three (...) possibleresponses: (1) that heat perception represents general(i.e. non-disjunctive) intrinsic properties of objects,(2) that heat perception represents the non-specific heatenergy that is transferred between a subjects body andanother body and (3) that heat perception exclusivelyrepresents heat properties of the subjects own body. (shrink)

Our experiences of heat and cold are usually thought to represent states of things: their hotness and coldness. I propose a novel account according to which their contents are not states of things but processes, more specifically, the opposite processes of thermal energy being transmitted to and from the body, respectively. I call this account the Heat Exchange Model of heat perception. Having set out the evidence in support of the proposal, I conclude by showing how it (...) provides a new perspective on some old problems. (shrink)

How do models give us knowledge? The case of Carnot’s ideal heat engine Content Type Journal Article Category Original paper in Philosophy of Science Pages 309-334 DOI 10.1007/s13194-011-0029-3 Authors Tarja Knuuttila, Theoretical Philosophy, University of Helsinki, P.O. Box 24, FIN-00014 Helsinki, Finland Mieke Boon, Department of Philosophy, University of Twente, Postbox 217, 7500 AE Enschede, The Netherlands Journal European Journal for Philosophy of Science Online ISSN 1879-4920 Print ISSN 1879-4912 Journal Volume Volume 1 Journal Issue Volume 1, Number 3.

The reduction of the concept of heat to that of molecular kinetic energy is recurrently presented as lending analogical support to the project of reduction of phenomenal concepts to physical concepts. The claimed analogy draws on the way the use of the concept of heat is attached to the experience in first person of a certain sensation. The reduction of this concept seems to prove the possibility to reduce discourse involving phenomenal concepts to a scientific description of neural (...) activity. But is this analogy really justified? We will show that if there is an analogy, far from speaking for a reduction of phenomenal concepts, it rather stresses the necessity to integrate phenomenal reports in the scientific study of experience. (shrink)

This book offers an original new account of one of Aristotle's central doctrines. Freudenthal He recreates from Aristotle's writings a more complete theory of material substance which is able to explain the problematical areas of the way matter organizes itself and the persistence of matter, to show that the hitherto ignored concept of vital heat is as central in explaining material substance as soul or form.

In scientific realist eyes we are only warranted to assert that a theory is true or approximately true if that theory enjoys considerable explanatory and predictive success. The most well known challenge to this claim, the pessimistic meta-induction, holds that the history of science is replete with successful theories that are now considered false. In effect, this challenge raises doubts about the reliability of inferences from explanatory and predictive success to (approximate) truth. The main realist reaction has been to argue (...) that upon closer scrutiny the historical record can be reconciled with scientific realism. When a successful theory is abandoned, not all of its components are discarded but only those that are inessential or idle for the theory’s success. Their abandonment is thus inconsequential for the realist. In this talk I consider what the modern kinetic theory of heat managed to salvage from the outdated caloric theory and whether the inter-theoretic relations between the two theories support a realist view of science. (shrink)

Victorian bodies in heat Content Type Journal Article DOI 10.1007/s11016-010-9489-x Authors Bruce Clarke, Department of English, Texas Tech University, Lubbock, TX 79409-3091, USA Journal Metascience Online ISSN 1467-9981 Print ISSN 0815-0796.

This paper explores the conditions under which scientists are warranted in adding the one-dimensional heat equation to their theories and then using the equation to describe particular physical situations. Summarizing these derivation and application conditions motivates an account of idealized scientific representation that relates the use of mathematics in science to interpretative questions about scientific theories.

Heat sensitive pit organs in different species of snakes show various shapes. The relation between form characters and functions were analysed by means of two different research programs. This paper presents the methodological steps involved in these research programs. The first approach is called a qualitative explanation because it connects experimental data by means of qualitative statements in order to give a functional morphological explanation for the construction of the pits in respect to the behaviour of the snake. The (...) second approach is called a quantitative explanation because the core of the explanation is a mathematical model which in its consequences explaines the construction of the pits in respect to image formation. (shrink)

This work presents an hydrodynamical model of heat stroke, which is a physiopathological state of stress, due to an exposure of animals to an ambient temperature of approximatively 40°C during two hours. The evolution of body temperature during this stress process is characterised by three phases. A first phase of increase is followed by a plateau which occurs before a second phase of increase which can be lethal. The model is based on the analogy of a boat progressively caught (...) in a whirlpool. The evolution of the degree of freedom lost by the boat is mathematically analysed and this study leads to the same three phases. The theoretical curves calculated during this study are well in agreement with the experimental curves obtained with animals. This analogy is compared to a previous one which has been made during another experiment with animals constrained by chemical intoxications. It seems that stress can be considered as a vital vorticity and that hydrodynamic models are powerful tools in understanding this physiopathological state. (shrink)

Philosophical discussions regarding the status of emotion as a scientific domain usually get framed in terms of the question whether emotion is a natural kind. That approach to the issues is wrongheaded for two reasons. First, it has led to an intractable philosophical impasse that ultimately misconstrues the character of the relevant debate in emotion science. Second, and most important, it entirely ignores valence, a central feature of emotion experience, and probably the most promising criterion for demarcating emotion from cognition (...) and other related domains. An alternate philosophical hypothesis for addressing the issues is pro- posed. It is that emotion is a naturally occurring valenced phenomenon that is.. (shrink)

The paper proposes a novel interpretation of Berkeley's so-called Assimilation Argument in the First Dialogue between Hylas and Philonous.

has been taken as a paradigmatic case of a non-referential scientific term. It is normally used as a vivid example of unfortunate positing of and theorising over unobservable entities.

The question of which areas of the earth are fit for human habitation and which ones are not is dealt with in several Hebrew scientific texts of the twelfth and thirteenth century. Medieval Jewish scholars such as Abraham bar [Hdotu]iyya, Samuel ibn Tibbon, and the three thirteenth-century Hebrew encyclopedists were familiar with theories of the oikoumene and its boundaries through Arabic sources. These Hebrew texts display a variety of views on the earth's habitability, all of which ultimately go back to (...) antiquity. Whereas some texts adopted a division of the inhabited portion of the earth into seven climes, others divided the earth into five zones of temperature, of which two were habitable and three were not owing to extreme temperatures. Some of these Jewish authors also pay attention to the question of how climatological or astrological conditions in a given region influence the mental constitution of its inhabitants. (shrink)

Example: which mathematical truths concerning the real numbers play a role in using real numbers to represent temperature? “temperature and other scalar fields used in physics are assumed to be continuous, and this guarantees that if point x has temperature ψ(x) and point z has temperature ψ(z) and r is a real number between ψ(x) and ψ(z), then there will be a point y spatio-temporally between x and z such that ψ(y ) = r ” (Field 1980, 57).

The “scientific essentialist” doctrine asserts that the following are examples of a posteriori necessary identities: water is H2O; gold is the element with atomic number 79; and heat is the motion of molecules. Evidence in support of this assertion, however, is difficult to find. Both Hilary Putnam and Saul Kripke have argued convincingly for the existence of a posteriori necessities. Furthermore, Kripke has argued for the existence of a posteriori necessary identities in regard to a particular class of statements (...) involving proper names. Neither Kripke nor Putnam, however, has argued convincingly that sentences containing syntactically complex terms or descriptive phrases can express a posteriori necessary identities. I will argue by way of a hypothetical example that ‘water is H2O’ does not express a necessary identity. My argument is unique in that it attacks the relevant sufficiency claim needed to underwrite this putative necessary identity.1 That is, even if we grant that water is necessarily composed of H2O, we should not accept that H2O necessarily forms water. (shrink)

In this paper it is argued that the multiple realizability argument and Kripke's argument are based on schemas of identifications rather than identification. In fact, "heat = molecular motion" includes a term "molecular motion" that does not capture a natural kind, nor has a unique referent. Is properly framed, this schema suits also for the type identity theory of mind. Some consequences of this point are evaluated.

This paper discusses a distinctive kind of property that I call “distributional” properties, which include, for example, the property of being polka-dotted (a colour-distributional property) and the property of being hot at one end and cold at the other (a heat-distributional property). I argue that distributional properties exist in whatever sense other properties exist, that they do not simply reduce to the non-distributional properties of points, and that they are implicated in the correct analysis of change.

When it was at its height, the feminist pornography debate tended to generate more heat than light. Only now that there has been a cease fire in the sex war does it seem possible to reflect on the debate in a more productive way and to address some of the questions that were left unresolved by it. In this paper, I shall argue that one of the major unresolved questions is that of how feminists should conceptualize power. The antipornography (...) feminists and the feminist sex radicals presuppose radically different conceptions of power, and this fact helps to explain why they come to such different conclusions about what, if anything, should be done about pornography. The feminist pornography debate remains unresolved precisely because it is unresolvable in the terms in which it has been posed. I shall contend that the conceptions of power presupposed on both sides of the debate are incomplete, and, therefore, inadequate.4 My hope is that once we recognize this, we might be able to improve not only the way that feminists analyze pornography but also the way we conceptualize power. (shrink)

Compared to other debates in contemporary political philosophy, the light-to-heat ratio of discussions of neutrality has been somewhat dismal. Although most political philosophers seem to know whether they are for it or against it, there is considerable confusion about what “it” is. To be sure, some of this ambiguity has been noted, and at least partially dealt with, in the literature. Neutrality understood as a constraint on the sorts of reasons that may be advanced to justify state action is (...) regularly distinguished from “consequential neutrality”—that the effects of state policy must somehow be neutral.1 Yet interpretations of neutrality are far more diverse than most analyses recognize.2 Neutrality is sometimes understood as a doctrine about: the intent or aim of legislation or legislators,3 the proper functions of the state,4 the prohibition of the state “taking a stand” on some issues,5 the prohibition of the state enforcing moral character,6 or the requirement that the state take a stance of impartiality.7 Alternatively, neutrality can be understood as a requirement of a theory justice rather than state action.8 There are also differences about whether neutral states (or theories.. (shrink)

Late in the nineteenth century, physics noticed a puzzling conflict between the laws of physics and what actually happens. The laws make no distinction between past and future—if they allow a process to happen one way, they allow it in reverse.1 But many familiar processes are in practice ‘irreversible’, common in one orientation but unknown ‘backwards’. Air leaks out of a punctured tyre, for example, but never leaks back in. Hot drinks cool down to room temperature, but never spontaneously (...) class='Hi'>heat up. Once we start looking, these examples are all around us—that’s why films shown in reverse often look odd. Hence the puzzle: What could be the source of this widespread temporal bias in the world, if the underlying laws are so even-handed? Call this the Puzzle of Temporal Bias, or PTB for short. It’s an oft-told tale how other puzzles of the late nineteenth century soon led to the two most famous achievements of twentieth century physics, relativity and quantum mechanics. Progress on PTB was much slower, but late in the twentieth century cosmology provided a spectacular answer, or partial answer, to this deep puzzle. Because the phenomena at the heart of PTB are so familiar, so ubiquitous, and so crucial to our own existence, the achievement is one of the most important in the entire history of physics. Yet it is littleknown and underrated, at least compared to the other twentieth century solutions to nineteenth century puzzles. Why is it underrated? Partly because people underestimate the original puzzle, or misunderstand it, and so don’t see what a big part of it is addressed by the new cosmology. And partly for a deeper, more philosophical reason, connected with the view that we don’t need to explain initial conditions. This has two effects. First, people undervalue the job done so far by cosmology, in telling us something very surprising.. (shrink)

_tableau_ can be given a full and satisfying explanation, while others cannot. We can explain in a full and satisfying way why the water in the mug is identical with H2O, why its liquidity is identical with a state of its molecular bonds, and why its heat is identical with its molecules being in motion. But we cannot explain in the same way why the neural processes which Joe undergoes when he looks at the mug are such as to (...) make the mug look green, and not red. The latter explanations have gaps. (shrink)

Is economic justice inherently opposed to a competitive market economy? Or are the two natural allies? Theorists of justice and critics and defenders of capitalism have been debating these issues for hundred of years. In my view, we do not yet have a sufficiently clear understanding either of what justice requires or of what the market economy might deliver to reach a definitive resolution of these debates. I took several broad swipes at these issues in essays published decades ago. One (...) of these essays (Arneson 1987) has elicited an intelligent and thoughtful critique by Russell Keat (this journal). I welcome the opportunity to revisit these issues, which still seem to me to be of great significance, even if my own attempts to engage them now appear to shed more heat than light. I find myself thoroughly is disagreement both with the main claims advanced by my 1987 essay and with Keat’s criticisms of them. In the first three sections of this paper I explain what is wrong with the views of my earlier self, and in the final section I explain why I do not find Keat’s critique compelling. I start with a brief rehearsal of my earlier arguments. Readers may consult Keat’s essay for excellent and accurate statements of my 1987 conclusions and the arguments I offered in their support. Arneson 1987 argues that if a market socialist economy of a syndicalist sort is established, if the distribution of resources is continuously adjusted to be fair, and if the market operates efficiently, further intervention in the market to bring it about that people gain more of the benefits of meaningful work would be unjust and unfair.1 The just economy maximizes a function of people’s preference satisfaction that balances two concerns: other things being equal, a greater aggregate degree of satisfaction of the ensemble of people’s preferences (each preference weighted by its importance to the individual who has it) is better, and other things being equal, a more equal degree of satisfaction of the preferences of each person is better.. (shrink)

In a series of recent papers, Jane Heal (1994, 1995a, 1995b, 1996a, 1996b) has developed her own quite distinctive version of simulation theory and offered a detailed critique of the arguments against simulation theory that we and our collaborators presented in earlier papers. Heal's theory is clearly set out and carefully defended, and her critique of our arguments is constructive and well informed. Unlike a fair amount of what has been written in this area in recent years, her work is (...) refreshingly free of obscurity; it generates more light than heat. While we have many disagreements with Heal, we also find much that we can agree with and learn from. In this paper we hope to advance the discussion by saying where we agree and how we think we can build on that agreement. We'll also explain where we disagree and why. (shrink)

According to Hume, the paradigm type of inductive reasoning, or—to use his terminology (T 1.3.6.2; SBN 86)1—"the inference we draw from cause to effect" (or vice versa), involves a constant conjunction. "We remember to have had frequent instances of the existence of one species of objects; and also remember, that the individuals of another species of objects have always attended them. . . . Thus we remember to have seen that species of object we call flame, and to have felt (...) that species of sensation we call heat. We likewise call to mind their constant conjunction in all past instances. Without any farther ceremony, we call the one cause and the other effect, and infer the existence of the one from that of the .. (shrink)

Sometimes analogy researchers talk as if the freshness of an experience of analogy resides solely in seeing that something is like something else -- seeing that the atom is like a solar system, that heat is like flowing water, that paint brushes work like pumps, or that electricity is like a teeming crowd. But analogy is more than this. Analogy isn't just seeing that the atom is like a solar system; rather, it is seeing something new about the atom, (...) an observation enabled by 'looking' at atoms from the perspective of one's understanding of solar systems. The question for analogy researchers then is this: Where does this new knowledge about atoms come from? How can an analogy provide new knowledge and new understanding? (shrink)

In this paper, I propose a new way of understanding the space of possibilities in the field of mental content. The resulting map assigns separate locations to theories of content that have generally been lumped together on the more traditional map. Conversely, it clusters together some theories of content that have typically been regarded as occupying opposite poles. I make my points concrete by developing a taxonomy of theories of mental content, but the main points of the paper concern not (...) merely how to classify, but how to understand, the theories. Also, though the paper takes theories of mental content as a case study, much of the discussion is applicable to theories of other phenomena. To a first approximation, the difference between the traditional and the proposed taxonomies turns on whether we classify theories of content by, on the one hand, their implications for a non-redundant supervenience base for content facts (i.e., for facts about what contents thoughts have) or, on the other, by their constitutive accounts of content. By a "constitutive account," I mean the kind of elucidation of the nature of a phenomenon that theorists have tried to give for, for example, knowledge, justice, personal identity, consciousness, convention, heat, and limit. The tendency to taxonomize by supervenience base is encouraged, I suggest, by a failure to keep clearly in view a distinction between constitutive and modal determination. Many philosophers would accept that a constitutive account cannot be captured in purely modal terms. Giving a constitutive account is not the same as specifying modally necessary and sufficient conditions. Nevertheless, philosophers often try to cash constitutive claims in modal terms. A case in point is that theories of content tend to be conceptualized in terms of the theories' implications for a supervenience base for content facts. My thesis goes beyond the by-now somewhat familiar proposition that not all modal determinants of a phenomenon are constitutive determinants. One who has taken that point on board might nevertheless conceive of a philosophical account as an attempt to specify constitutive determinants of the target phenomenon that make up a non-redundant supervenience base for the phenomenon. Shoehorning a philosophical account into this form leaves out elements that are modally redundant, but may be explanatorily or ontologically significant. For example, when a constitutive account has multiple levels, the different levels will typically be modally redundant. Formulating the account as a specification of a supervenience base of constitutive determinants will therefore flatten the account into a single level. Many of my arguments can be illustrated by considering the place of normativity in the theory of content. The new taxonomy gives a distinct niche to normative theories of content - theories that explain a thought's having a certain content at least in part in terms of the obtaining of normative facts. By contrast, on a traditional map, normative theories are invisible as such because normative facts supervene on non-normative ones. (shrink)

In lecture III of Naming and Necessity, Kripke extends his claim that names are non-descriptive to natural kind terms, and in so doing includes a brief supporting discussion of terms for natural phenomena, in particular the terms ‘light’ and ‘heat’. Whilst natural kind terms continue to feature centrally in the recent literature, natural phenomenon terms have barely figured. The purpose of the present paper is to show how the apparent similarities between natural kind terms and the natural phenomenon terms (...) on which Kripke focuses are outweighed by more significant differences. Thus, rather than providing additional support for non-descriptivism, natural phenomenon terms turn out to challenge that thesis. (shrink)

In this paper I examine Aristotle's account of sexual difference in Generation of Animals, arguing that Aristotle conceives of the production of males as the result of a successful teleological process, while he sees the production of females as due to material forces that defeat the norms of nature. My suggestion is that Aristotle endorses what I call the "degrees of perfection" model. I challenge Devin Henry's attempt to argue that Aristotle explains sex determination exclusively with reference to material necessity (...) (in particular, levels of "vital heat" in the male semen), for Aristotle's notion of "sufficient" or "deficient" vital heat is itself teleological. If, as Aristotle is aware, male and female embryos appear with approximately equal frequency in most species, how, in light of Physics II, can he conceive of the former as in accordance with nature, and the latter as somehow contrary to nature? My proposal is that Aristotle's notion of what happens usually (ως επì τò πoλυ) is bifurcated: the usual need not be more frequent. (shrink)

A popular and plausible response against Laudan's “pessimistic induction” has been what I call “preservative realism,” which argues that there have actually been enough elements of scientific knowledge preserved through major theory‐change processes, and that those elements can be accepted realistically. This paper argues against preservative realism, in particular through a critical review of Psillos's argument concerning the case of the caloric theory of heat. Contrary to his argument, the historical record of the caloric theory reveals that beliefs about (...) the properties of material caloric, rejected by subsequent theories, were indeed central to the successes of the caloric theory. Therefore caloric remains a favorable case for Laudan. Further, I argue that even confirmed cases of preservation do not warrant an inference to truth. (shrink)

When objects are illuminated, the light they reflect does not simply bounce off their surface. Rather, that light is entirely reabsorbed and then reemitted, as the result of a complex microphysical event near the surface of the object. If we are to be physicalists regarding color, then we should analyze colors in terms of that event, just as we analyze heat in terms of molecular motion, and sound in terms of vibrations. On this account, colors are not standing properties (...) of objects, but events, or (more cautiously) properties associated with events. Accordingly, objects in the dark are no more colored than a turned-off stove is hot. Such an account requires rejecting some of what folk ordinarily say about color, but this is the most coherent version of color physicalism. (shrink)

Adam Smith's metaphor of the "invisible hand" and its analogue in classical physics are investigated in detail. Smith's analogue was the mechanics of the solar system. What makes the analogy fail are not the idealisations in the caricature-like model of the rational economic man . The main problem rather is that the metaphor does not employ the correct analogue, which belongs to thermodynamics and statistics. In the simplest macro-economic model, the business cycle has the same formal structure as the (...) class='Hi'>heat flow between two heat reservoirs and a business cycle of growing efficiency works like a refrigerator: it pumps money from the poor to the rich. More complicated models do not give a friendlier image. Due to technological push, an economic system behaves like a thermodynamic system far from the equilibrium, showing chaotic behaviour and developing into unpredictable states. (shrink)

Few contemporary researchers in psychology, philosophy, and the cognitive sciences have any doubt about whether mental phenomena occur without being conscious. There is extensive and convincing clinical and experimental evidence for the existence of thoughts, desires, and related mental states that aren’t conscious. We characterize thoughts, desires, intentions, expectations, hopes, and many other mental states in terms of the things they are about and, more fully, in terms of their content, as captured by a sentence nominalization, such as a clause (...) beginning with the word ‘that’. The philosophical literature follows Franz Brentano’s adaptation of Thomist terminology in referring to all such states as intentional states. But there is another type of mental phenomena, which lack intentionality and whose mental nature consists instead of some qualitative feature. These states include bodily sensations, such as aches and pains, and perceptual states, such as visual sensations of color and tactile sensations of heat and cold. And these states all exhibit some mental quality or another, such as the mental quality distinctive of pain or the mental quality of red or blue.1 And even theorists who acknowledge that intentional states can and do occur without being conscious have sometimes insisted that qualitative states cannot. There is, according to these theorists, nothing to a state’s being qualitative or exhibiting some mental quality unless that state is conscious – unless it is, as we might metaphorically say, “lighted up”. It’s striking that Freud himself seems to have adopted this double standard toward the two types of mental state. In his metapsychological paper, “The Unconscious”, for example, he writes that “all the categories which we employ to describe conscious mental acts, such as ideas, purposes, resolutions, and so forth, can be applied to [unconscious mental occurrences]” (Freud 1915e, p. 168). But he seems here to have in.. (shrink)

Abstract: The Inverted Earth case has seen fierce debate between Ned Block, who says it defeats the causal-covariational brand of wide representationalism about qualia, and Michael Tye and Bill Lycan, who say it does not. The debate has generated more heat than light because of a failure to get clear on who is supposed to be proving what, and what premises can be deployed in doing so. I argue that a correct understanding of the case makes it clear that (...) the causal covariation theory is in deeper trouble over Inverted Earth than is generally supposed even by the theory's detractors. (shrink)

We are often faced with choices that involve the weighing of people's lives against each other, or the weighing of lives against other good things. These are choices both for individuals and for societies. A person who is terminally ill may have to choose between palliative care and more aggressive treatment, which will give her a longer life but at some cost in suffering. We have to choose between the convenience to ourselves of road and air travel, and the lives (...) of the future people who will be killed by the global warming we cause, through violent weather, tropical disease, and heat waves. We also make choices that affect how many lives there will be in the future: as individuals we choose how many children to have, and societies choose tax policies that influence people's choices about having children. These are all problems of weighing lives. How should we weigh lives? Weighing Lives develops a theoretical basis for answering this practical question. It extends the work and methods of Broome's earlier book Weighing Goods to cover the questions of life and death. Difficult problems come up in the process. In particular, Weighing Lives tackles the well-recognized, awkward problems of the ethics of population. It carefully examines the common intuition that adding people to the population is ethically neutral - neither a good nor a bad thing - but eventually concludes this intuition cannot be fitted into a coherent theory of value. In the course of its argument, Weighing Lives examines many of the issues of contemporary moral theory: the nature of consequentialism and teleology; the transitivity, continuity, and vagueness of betterness; the quantitative conception of wellbeing; the notion of a life worth living; the badness of death; and others. This is a work of philosophy, but one of its distinctive features is that it adopts some of the precise methods of economic theory (without introducing complex mathematics). Not only philosophers, but also economists and political theorists concerned with the practical question of valuing life, should find the book's conclusions highly significant to their work. (shrink)

States of the brain represent states of the world. A puzzle arises when one learns that at least some of the mind/brain’s internal representations, such as a sensation of heat or a sensation of red, do not genuinely resemble the external realities they allegedly represent: the mean kinetic energy of the molecules of the substance felt (temperature) and the mean electromagnetic reflectance profile of the seen object (color). The historical response has been to declare a distinction between objectively real (...) properties, such as shape motion and mass, and merely subjective properties, such as heat, color and smell. This hypothesis leads to trouble. A challenge for cognitive neurobiology is to characterize, in suitably general terms, the nature of the relationship between brain models and the world modeled. We favor the hypothesis that brains develop high-dimensional maps whose internal relations correspond in varying degrees of fidelity to the enduring causal structure of the world. From this perspective, the basic epistemological relation is not “single-percept to single- external-feature” but rather “background-brain-maps to causal-domain-portrayed. (shrink)

*[Intertheoretic Reduction]: ___ When a new and very powerful theory turns out to entail a set of propositions and principles that mirror perfectly the propositions of some older theory or conceptual framework, we can conclude that the old terms and the new terms refer to the very same thing, or express the very same properties. (e.g. heat = high average molecular kinetic energy) The old theory is then said to be "reducible" to the new theory.

There has recently been a good deal of controversy about Landauer's Principle, which is often stated as follows: The erasure of one bit of information in a computational device is necessarily accompanied by a generation of kTln2 heat. This is often generalised to the claim that any logically irreversible operation cannot be implemented in a thermodynamically reversible way. John Norton (2005) and Owen Maroney (2005) both argue that Landauer's Principle has not been shown to hold in general, and Maroney (...) offers a method that he claims instantiates the operation Reset in a thermodynamically reversible way. In this paper we defend the qualitative form of Landauer's Principle, and clarify its quantitative consequences (assuming the second law of thermodynamics). We analyse in detail what it means for a physical system to implement a logical transformation L, and we make this precise by defining the notion of an L-machine. Then we show that logical irreversibility of L implies thermodynamic irreversibility of every corresponding L-machine. We do this in two ways. First, by assuming the phenomenological validity of the Kelvin statement of the second law, and second, by using information-theoretic reasoning. We illustrate our results with the example of the logical transformation 'Reset', and thereby recover the quantitative form of Landauer's Principle. (shrink)

Can we believe things that could not possibly be true? The world seems full of examples. Mathematicians have "proven" theorems which in fact turn out to be false. People have believed that Hesperus is not Phosphorus, that they themselves are essentially incorporeal, that heat is not molecular motion--all propositions which have been claimed to be not just false, but necessarily false. Some have even seemed to pride themselves on believing the impossible; Hegel thought contradictions could be true, and Kierkegaard (...) seems to have thought that Christianity, in which he fervently believed, was impossible and absurd. (shrink)

How do the variegated forms of sublunar substances (the elements, homoeomerous substances, plants, animals) arise in prime matter? Averroes throughout his life believed that “a principle from without” was involved, but changed his mind over its identity. While in an early period of his life he maintained that all forms emanate from the active intellect, he later discarded that metaphysical notion and sought to develop a more naturalistic, astrologically inspired account, which identified the heavenly bodies as the source of sublunar (...) forms. Comparing different versions of Averroean texts, this paper seeks to spell out how, in Averroes' view, the heavenly bodies generate forms in matter. Averroes claims that this is brought about by means of their “heats,” an answer that is however problematic seeing that in the Aristotelian cosmology the celestial realm is quality-less. The paper examines Averroes' ideas on the relationship between light and heat, concluding that the Commentator was unable to integrate the postulate that the heavenly bodies inform matter within his Aristotelian theory of matter. (shrink)

We tend to think that the two great scourges of humankind, sexism and racism, have been around since the beginning of time. With regard to sexism, this is true. Aristotle, for example, thought women are malformed men: they do not have rational souls; they do not have enough soul heat to think properly or to boil their menstrual blood into semen; and, the cruelest cut of all, they are inferior because they have one less tooth than men. Aristotle also (...) believed, along with his compatriots, that all non-Greeks were barbarians and that slavery, especially for those of an inferior class or those captured in war, was completely justified. But Aristotle, and all other ancients of whom we are aware, did not ever think of discriminating against people because of the color of their skin. (shrink)

There has recently been a good deal of controversy about Landauer's Principle, which is often stated as follows: The erasure of one bit of information in a computational device is necessarily accompanied by a generation of kT ln 2 heat. This is often generalised to the claim that any logically irreversible operation cannot be implemented in a thermodynamically reversible way. John Norton (2005) and Owen Maroney (2005) both argue that Landauer's Principle has not been shown to hold in general, (...) and Maroney offers a method that he claims instantiates the operation reset in a thermodynamically reversible way. In this paper we defend the qualitative form of Landauer's Principle, and clarify its quantitative consequences (assuming the second law of thermodynamics). We analyse in detail what it means for a physical system to implement a logical transformation L, and we make this precise by defining the notion of an L-machine. Then we show that logical irreversibility of L implies thermodynamic irreversibility of every corresponding L-machine. We do this in two ways. First, by assuming the phenomenological validity of the Kelvin statement of the second law, and second, by using information-theoretic reasoning. We illustrate our results with the example of the logical transformation 'reset', and thereby recover the quantitative form of Landauer's Principle. (shrink)

I deny that the world is fundamentally causal, deriving the skepticism on non-Humean grounds from our enduring failures to find a contingent, universal principle of causality that holds true of our science. I explain the prevalence and fertility of causal notions in science by arguing that a causal character for many sciences can be recovered, when they are restricted to appropriately hospitable domains. There they conform to a loose collection of causal notions that form a folk science of causation. This (...) recovery of causation exploits the same generative power of reduction relations that allows us to recover gravity as a force from Einstein's general relativity and heat as a conserved fluid, the caloric, from modern thermal physics, when each theory is restricted to appropriate domains. Causes are real in science to the same degree as caloric and gravitational forces. (shrink)

Imagine you live in 1823 and you are about to design an advanced course on the theory of heat. About fifty years ago, Lavoisier and Laplace had posited caloric as a material substance—an indestructible fluid of fine particles—which was taken to be the cause of heat and in particular, the cause of the rise of temperature of a body, by being absorbed by the body. No doubt, you rely on the best available theory, which is the caloric theory. (...) In particular, meticulous and knowledgeable as you are, you rely on the best of the best: Laplace’s advanced account of the caloric theory of heat, with all its sophistication, detail and predictive might. You really believe that the best science teaching should be based on the best theories that are available. But you also believe that the best theory that is available is not really the best unless it has a claim to truth (or truthlikeness, or partial truth and the like). For what is the point of teaching a theory about the deep structure of the world unless it does say something or other about this deep structure? The course goes really well. Your notes are impressive. They are soon turned into a textbook with lots of explanatory detail and fancy calculations. Alas! The world does not co-operate. There are no calorific particles among the things there are in it. Heat is destroyed when work is produced. The advanced theory is challenged by alternative theories, anomalies and failed predictions. There is agony, but in your lifetime, the caloric theory gets superseded and is left discredited in the wasteland of false theories. Decades come by. You are not around anymore. Your grandchildren go to school and.. (shrink)

Rescued in 1972 from a storeroom in which rats and seeping water had severely damaged the fifty-year-old manuscript, this text is the earliest major work (1919-1921) of the great Russian philosopher M. M. Bakhtin. Toward a Philosophy of the Act contains the first occurrences of themes that occupied Bakhtin throughout his long career. The topics of authoring, responsibility, self and other, the moral significance of "outsideness," participatory thinking, the implications for the individual subject of having "no-alibi in existence," the difference (...) between the world as experienced in actions and the world as represented in discourse--all are broached here in the heat of discovery. This is the "heart of the heart" of Bakhtin, the center of the dialogue between being and language, the world and mind, "the given" and "the created" that forms the core of Bakhtin's distinctive dialogism. A special feature of this work is Bakhtin's struggle with the philosophy of Immanuel Kant. Put very simply, this text is an attempt to go beyond Kant's formulation of the ethical imperative. Toward a Philosophy of the Act will be important for scholars across the humanities as they grapple with the increasingly vexed relationship between aesthetics and ethics. (shrink)

I deny that the world is fundamentally causal, deriving the skepticism on non-Humean grounds from our enduring failures to find a contingent, universal principle of causality that holds true of our science. I explain the prevalence and fertility of causal notions in science by arguing that a causal character for many sciences can be recovered, when they are restricted to appropriately hospitable domains. There they conform to loose and varying collections of causal notions that form folk sciences of causation. This (...) recovery of causation exploits the same generative power of reduction relations that allows us to recover gravity as a force from Einstein's general relativity and heat as a conserved fluid, the caloric, from modern thermal physics, when each theory is restricted to appropriate domains. Causes are real in science to the same degree as caloric and gravitational forces. (shrink)

It is generally accepted, following Landauer and Bennett, that the process of measurement involves no minimum entropy cost, but the erasure of information in resetting the memory register of a computer to zero requires dissipating heat into the environment. This thesis has been challenged recently in a two-part article by Earman and Norton. I review some relevant observations in the thermodynamics of computation and argue that Earman and Norton are mistaken: there is in principle no entropy cost to the (...) acquisition of information, but the destruction of information does involve an irreducible entropy cost. (shrink)

Integrating concepts of maintenance and of origins is essential to explaining biological diversity. The unified theory of evolution attempts to find a common theme linking production rules inherent in biological systems, explaining the origin of biological order as a manifestation of the flow of energy and the flow of information on various spatial and temporal scales, with the recognition that natural selection is an evolutionarily relevant process. Biological systems persist in space and time by transfor ming energy from one state (...) to another in a manner that generates structures which allows the system to continue to persist. Two classes of energetic transformations allow this; heat-generating transformations, resulting in a net loss of energy from the system, and conservative transformations, changing unusable energy into states that can be stored and used subsequently. All conservative transformations in biological systems are coupled with heat-generating transformations; hence, inherent biological production, or genealogical proesses, is positively entropic. There is a self-organizing phenomenology common to genealogical phenomena, which imparts an arrow of time to biological systems. Natural selection, which by itself is time-reversible, contributes to the organization of the self-organized genealogical trajectories. The interplay of genealogical (diversity-promoting) and selective (diversity-limiting) processes produces biological order to which the primary contribution is genealogical history. Dynamic changes occuring on times scales shorter than speciation rates are microevolutionary; those occuring on time scales longer than speciation rates are macroevolutionary. Macroevolutionary processes are neither redicible to, nor autonomous from, microevolutionary processes. (shrink)

I argue that there are good reasons to assume that Quine’s theory of reference and ontology is incompatible with reductive statements – such as ‘Heat is molecular motion’ or ‘Rabbits are conglomerations of cells’. Apparently, reductive statements imply certain intertheoretical identities, yet Quine’s theory of reference and ontology seems incompatible with intertheoretical identities. I argued that treating, for the sake of reconciliation, reductive statements along the lines of Quine’s theory of an ontological reduction (which does not imply intertheoretical identity) (...) fails. Then I discussed two alternative strategies on behalf of Quine to handle reductive statements: the Holistic Strategy (which appeals to Quine’s notion of an all-encompassing background theory) and the Individuative Strategy (which draws on Quine’s notion of an apparatus of individuation). I argue that the Individuative Strategy promises to succeed. However, the Individuative Strategy obliges to revising Quine’s theory of an ontological reduction – a revision that, as I argue, can and should be implemented. (shrink)

The texts (and talk) of engineers take different forms. In this essay, I present and critique several texts written for different purposes and audiences but all intended to convey to the reader the technical details of whatever they are about—whether a textbook passage describing the fundamental behavior of an electrical component, a journal article about a mathematical technique intended for use in design optimization, a memo to co-workers within a firm about a heat transfer analysis of a remotely sited (...) building, or a general introduction to the field of? ergonomics? My aim is to explore how the ways in which engineers describe and document their problems and projects frame what they accept, display and profess as useful knowledge. In this I am particularly interested in how engineers envision the ‘users’ of, or participants in, their productions. Like science, engineering texts are written as if they were timeless and untainted by socio-cultural features. However, a technical treatise is not devoid of metaphor or creative rendering of events; there is always a narrative within which worldly data and instrumental logic is embedded—but it is a story in which the passive voice prevails, history is irrelevant, and the human actor or agent is painted in quantitative parameters fitting the occasion. Whether this rhetoric can be sustained in the face of challenges to traditional ways of doing engineering is an open question. (shrink)

This article examines the role of philosophy in the development of the kinetic theory of gases. Two opposing accounts of this role, by Peter Clark and John Nyhof, are discussed and criticized. Contrary to both accounts, it is argued that philosophical views of scientists can fundamentally influence the results of their scientific work. This claim is supported by a detailed analysis of the philosophical views of Maxwell and Boltzmann, and of their work on the kinetic theory, especially concerning the so-called (...) specific heat anomaly. It leads to the conclusion that the scientific development of the kinetic theory cannot be understood without taking into account the role of philosophy. (shrink)

In his book "Walden", Henry David Thoreau (1817-1862) describes an experiment intended to determine what is essential in life. His analysis includes a critique of the excesses of material culture, concluding that the most important concerns for human beings revolve around the retention of what he calls "heat." I suggest that there are a number of interesting parallels between this analysis and a cluster of ideas generally describable as "protodaoist" and often attributed to the legendary and obscure figure known (...) as Yang Zhu or Yangzi. In particular, both of these models can be seen to relate one's efficient preservation of life force to the accomplishment of what I am calling one's "natural destiny," and both include a concomitant critique of material culture. In this essay I will define the concept of natural destiny and articulate and compare the two models' common concern with achieving it through properly economizing one's resources in the face of the diversion provoked by material attachments. (shrink)

A major part of Einstein’s 1905 light quantum paper is devoted to arguing that high frequency heat radiation bears the characteristic signature of a microscopic energy distribution of independent, spatially localized components. The content of his light quantum proposal was precarious in that it contradicted the great achievement of nineteenth century physics, the wave theory of light and its accommodation in electrodynamics. However the methods used to arrive at it were both secure and familiar to Einstein in 1905. A (...) mainstay of Einstein’s research in statistical physics, extending to his earliest publications of 1901 and 1902, had been the inferring of the microscopic constitution of systems from their macroscopic properties. In his statistical work of 1905, Einstein dealt with several thermal systems consisting of many, independent, spatially localized components. They were the dilute sugar solutions of his doctoral dissertation and suspended particles of his Brownian motion paper. (shrink)

A remarkable thesis prevails in the physics of information, saying that the logical properties of operations that are carried out by computers determine their physical properties. More specifically, it says that logically irreversible operations are dissipative by klog2 per bit of lost information. (A function is logically irreversible if its input cannot be recovered from its output. An operation is dissipative if it turns useful forms of energy into useless ones, such as heat energy.) This is Landauer's dissipation thesis, (...) hereafter LDT. LDT underlies and motivates numerous researches in physics and computer science. Nevertheless, this paper shows that is it plainly wrong. This conclusion is based on a detailed study of LDT in terms of the various notions of entropy used in main stream statistical mechanics. It is supported by a counter example for LDT. Further support is found in an analysis of the phase space representation on which LDT relies. This analysis emphasises the constraints placed on the choice of probability distribution by the fact that it has to be the basis for calculating phase averages corresponding to thermodynamic properties of individual systems. An alternative representation is offered, in which logical irreversibility has nothing to do with dissipation. The strong connection between logic and physics, that LDT implies, is thereby broken off. (shrink)

Studies exploring how students learn and understand science processes such as diffusion and natural selection typically find that students provide misconceived explanations of how the patterns of such processes arise (such as why giraffes’ necks get longer over generations, or how ink dropped into water appears to “flow”). Instead of explaining the patterns of these processes as emerging from the collective interactions of all the agents (e.g., both the water and the ink molecules), students often explain the pattern as being (...) caused by controlling agents with intentional goals, as well as express a variety of many other misconceived notions. In this article, we provide a hypothesis for what constitutes a misconceived explanation; why misconceived explanations are so prevalent, robust, and resistant to instruction; and offer one approach of how they may be overcome. In particular, we hypothesize that students misunderstand many science processes because they rely on a generalized version of narrative schemas and scripts (referred to here as a Direct-causal Schema) to interpret them. For science processes that are sequential and stage-like, such as cycles of moon, circulation of blood, stages of mitosis, and photosynthesis, a Direct-causal Schema is adequate for correct understanding. However, for science processes that are non-sequential (or emergent), such as diffusion, natural selection, osmosis, and heat flow, using a Direct Schema to understand these processes will lead to robust misconceptions. Instead, a different type of general schema may be required to interpret non-sequential processes, which we refer to as an Emergent-causal Schema. We propose that students lack this Emergent Schema and teaching it to them may help them learn and understand emergent kinds of science processes such as diffusion. Our study found that directly teaching students this Emergent Schema led to increased learning of the process of diffusion. This article presents a fine-grained characterization of each type of Schema, our instructional intervention, the successes we have achieved, and the lessons we have learned. (shrink)

A Critique of Localized Realism Abstract In an attempt to avert Laudan’s pessimistic induction, Worrall and Psillos introduce a narrower version of scientific realism. According to this version, which can be referred to as “localized realism”, realists need not accept every component in a successful theory. They are supposed only to accept those components that led to the theory’s empirical success. Consequently, realists can avoid believing in dubious entities like the caloric and ether. This paper examines and critiques localized realism. (...) It also scrutinizes Psillos’s historical study of the caloric theory of heat, which is intended to support localized realism. (shrink)

Curiously, in some ways gravity is also the strongest force in the universe. It always adds, never subtracts, and can build up until it overwhelms all other forces.. In normal stars gravity is balanced by heat energy from fusion reactions in the star's core. Eventually, however, the hydrogen and heavier elements fueling these reactions are used up, gravity takes over, and the star collapses in on itself. The result is a supernova explosion, which converts a sizable fraction of the (...) star's mass-energy to light, neutrinos, and gravity waves. (shrink)

It is only when mixing two or more pure substances along a reversible path that the entropy of the mixing can be made physically manifest. It is not, in this case, a mere mathematical artifact. This mixing requires a process of successive stages. In any finite number of stages, the external manifestation of the entropy change, as a definite and measurable quantity of heat, isa fully continuous function of the relevant variables. It is only at an infinite and unattainable (...) limit thata non-uniform convergence occurs. And this occurs when considered in terms of the number of stages together with a distinguishability parameter appropriate to the particular device which is used to achieve reversibility. These considerations, which are of technological interest to chemical engineers, resolve a paradox derived in chemical theory called Gibbs'' Paradox. (shrink)

Electronic computers generate heat and the need for its removal sets a practical limit to their performance. In thermodynamic terms, the heat arises from the degradation of the work energy supplied electrically to operate the computer. The study of the thermodynamics of computation, surveyed in Bennett (1982), seeks to find the limits in principle to reduction of this dissipation. Since it reduces with the size of the computing device, the most thermodynamically efficient computers are sought among those that (...) use individual molecules, charges or magnetic dipoles as memory storage devices. (shrink)

Living organisms are caught between a hammer and an anvil, evolutionarily speaking. On the one hand, they need to buffer the influences of genetic mutations and environmental stresses if they are to develop normally and maintain a coherent and functional form. On the other, stabiliz- ing one’s development too much may mean not being able to respond at all to changes in the environment and starting down the primrose path to extinction. On page 618 of this issue, Queitsch et al.1 (...) propose that, in plants, the balance between stability and the potential for change is made possible in part through a protein involved in ‘heat- shock responses’ in a wide variety of species, from plants to insects. (shrink)

I deny that the world is fundamentally causal, deriving the skepticism on non-Humean grounds from our enduring failures to find a contingent, universal principle of causality that holds true of our science. I explain the prevalence and fertility of causal notions in science by arguing that a causal character for many sciences can be recovered, when they are restricted to appropriately hospitable domains. There they conform to loose and varying collections of causal notions that form folk sciences of causation. This (...) recovery of causation exploits the same generative power of reduction relations that allows us to recover gravity as a force from Einstein's general relativity and heat as a conserved fluid, the caloric, from modern thermal physics, when each theory is restricted to appropriate domains. Causes are real in science to the same degree as caloric and gravitational forces. (shrink)

In verse twelve of the Tao Te Ching, Lao Tzu makes a curious claim about the five flavors; namely that they cause people not to taste or that they jade the palate. The five flavors are: sweet, sour, salt, bitter (these four are the elements of taste in the West, recognized by the science of taste) and spicy or hot as in 'heat' (or picante, not caliente). To the Western mind, the claim, 'The five flavors cause (...) them [persons] to not taste,' is counterintuitive; on the contrary, the presence of the five flavors in a dish or in a meal would expand or enhance the senses and the palate, i.e., taste would be augmented by the five flavors. So what is the plausible meaning of the Taoistic claim? To answer this question, I look very briefly at the history of the doctrine of the five flavors and the history of Chinese cuisine. Lao Tzu probably has Confucian feasts in mind in making such a claim, but other interpretations are discussed. (shrink)

Biology in the popular mind remains tied to the doctrines of the struggle forsurvival and the survival of the fittest. Physics is linked to the heat deathof the universe – the inexorable march towards greater disorder,increasing entropy. Our field, on the other hand, focuses on orderedstructures, molecules and crystals, and their aggregates, and what holdsthem together. The philosophy of chemistry is centered on affinity,cohesion, the architecture of the very small, attraction, harmony, and, ifyou permit, beauty. Our discipline is the (...) voice of the twenty-first century,a message, a clarion call of life, of hope. This paper addresses failures ofreductionist and deterministic claims in the face of the cussedness ofchemical facts. It will examine uncertainty principles, Edmund Whitaker'spostulates of impotence, Gerald Holton's themata, Isaiah Berlin's warning –and the wisdom of the Chinese. We can teach the world the need for humilityin the face of the wonder and mystery of our world. (shrink)

The laboratory creation scene in Branagh’s film is brilliant….Even more frenzied and overwrought than Whale’s, Branagh’s creation scene is filmed with dozens of quick cuts, each shot full of movement across the frame. Victor races along his attic hall, cape flying before he discards it to appear bare-chested and vigorous. While pulleys move, bottles clank, and blue volts of electricity rise in glass Tesla tubes, the naked body on the gurney is raised into a copper vat. Electric eels dispense their (...) powerful shocks, a brown sac-like bellows "breathes" air or heat, and finally Victor stares close-up at the Creature’s eyes. The eyes are seen through a porthole in the vat: this, our first glimpse of the monster occurs nearly an hour into the film. "Live, live, live, live...." Victor chants, then "YES!" (much in the old Colin Clive mode) as it opens its eyes briefly. Nothing more occurs, though, and Victor walks away in despair; but, like us, he is brought suddenly to attention by a sharp and surprising snap of the monster’s fingers, which we also see close-up through a porthole (in a clear allusion to the Karloff monster’s birth scene). The next sequence drives home the fact that this is a real birth scene, as the vat is smashed open (the "water breaks") and Victor lifts out his huge new "baby," smacking its chest to clear its lungs. We watch an extended scene of birth struggle while Victor works to "deliver" his huge, naked, and hairless "baby" by lifting it out of the slime. Giving birth is not only very hard labor here; it’s messy, too. (shrink)

But to explain. Dissipation inspires the wrath of the moralist and the envy of most others; for the physicist, however, it is merely faintly depressing. We call something dissipative if it looses energy to waste-heat. (Technically: if volume in the phase space is not conserved.) The famous Second Law of Thermodynamics amounts to saying that, if something is isolated from the rest of the world, it will dissipate all the free energy it has. Equivalently, it maximizes its entropy. Thermal (...) equilibrium is the state of maximum entropy. (shrink)