When a doctor tells you there’s a one percent chance that an operation will result in your death, or a scientist claims that his theory is probably true, what exactly does that mean? Understanding probability is clearly very important, if we are to make good theoretical and practical choices. In this engaging and highly accessible introduction to the philosophy of probability, Darrell Rowbottom takes the reader on a journey through all the major interpretations of probability, with reference (...) to real–world situations. In lucid prose, he explores the many fallacies of probabilistic reasoning, such as the ‘gambler’s fallacy’ and the ‘inverse fallacy’, and shows how we can avoid falling into these traps by using the interpretations presented. He also illustrates the relevance of the interpretation of probability across disciplinary boundaries, by examining which interpretations of probability are appropriate in diverse areas such as quantum mechanics, game theory, and genetics. Using entertaining dialogues to draw out the key issues at stake, this unique book will appeal to students and scholars across philosophy, the social sciences, and the natural sciences. (shrink)

Wittgenstein did not write very much on the topic of probability. The little we have comes from a few short pages of the Tractatus, some 'remarks' from the 1930s, and the informal conversations which went on during that decade with the Vienna Circle. Nevertheless, Wittgenstein's views were highly influential in the later development of the logical theory of probability. This paper will attempt to clarify and defend Wittgenstein's conception of probability against some oft-cited criticisms that stem from (...) a misunderstanding of his views. Max Black, for instance, criticises Wittgenstein for formulating a theory of probability that is capable of being used only against the backdrop of the ideal language of the Tractatus. I argue that on the contrary, by appealing to the 'hypothetical laws of nature', Wittgenstein is able to make sense of probability statements involving propositions that have not been completely analysed. G.H. von Wright criticises Wittgenstein's characterisation of these very hypothetical laws. He argues that by introducing them Wittgenstein makes what is distinctive about his theory superfluous, for the hypothetical laws are directly inspired by statistical observations and hence these observations indirectly determine the mechanism by which the logical theory of probability operates. I argue that this is not the case at all, and that while statistical observations play a part in the formation of the hypothetical laws, these observations are only necessary, but not sufficient conditions for the introduction of these hypotheses. (shrink)

When a doctor tells you there’s a one percent chance that an operation will result in your death, or a scientist claims that his theory is probably true, what exactly does that mean? Understanding probability is clearly very important, if we are to make good theoretical and practical choices. In this engaging and highly accessible introduction to the philosophy of probability, Darrell Rowbottom takes the reader on a journey through all the major interpretations of probability, with reference (...) to real–world situations. In lucid prose, he explores the many fallacies of probabilistic reasoning, such as the ‘gambler’s fallacy’ and the ‘inverse fallacy’, and shows how we can avoid falling into these traps by using the interpretations presented. He also illustrates the relevance of the interpretation of probability across disciplinary boundaries, by examining which interpretations of probability are appropriate in diverse areas such as quantum mechanics, game theory, and genetics. Using entertaining dialogues to draw out the key issues at stake, this unique book will appeal to students and scholars across philosophy, the social sciences, and the natural sciences. (shrink)

Ambiguity affects decisions of people who exhibit a distaste of and require a premium for dealing with it. Do ambiguity-neutral subjects completely disregard ambiguity and react to any vague news? Online vending platforms often attempt to affect buyer’s decisions by messages like “20 people are looking at this item right now” or “The average score based on 567 reviews is 7.9/10”. We augment the two-color Ellsberg experiment with similarly worded signals about the unknown probability of success. All decision-makers, including (...) ambiguity-neutral, recognize and account for ambiguity; ambiguity-neutral subjects are less likely to respond to vague signals. The difference between decisions of ambiguity-neutral and non-neutral subjects vanishes for high precision signals; still less than 60% subjects choose the ambiguous urn, even for high communicated probabilities of success. We conjecture participants may discard information, if they see no contradiction between it and their prior beliefs, hence the latter are not updated. Higher confidence makes subjects more likely to discard the news, and empirically ambiguity-neutral subjects appear more confident than those ambiguity-averse. (shrink)

The article focuses on representing different forms of non-adjunctive inference as sub-Kripkean systems of classical modal logic, where the inference from □A and □B to □A ∧ B fails. In particular we prove a completeness result showing that the modal system that Schotch and Jennings derive from a form of non-adjunctive inference in (Schotch and Jennings, 1980) is a classical system strictly stronger than EMN and weaker than K (following the notation for classical modalities presented in Chellas, 1980). The unified (...) semantical characterization in terms of neighborhoods permits comparisons between different forms of non-adjunctive inference. For example, we show that the non-adjunctive logic proposed in (Schotch and Jennings, 1980) is not adequate in general for representing the logic of high probability operators. An alternative interpretation of the forcing relation of Schotch and Jennings is derived from the proposed unified semantics and utilized in order to propose a more fine-grained measure of epistemic coherence than the one presented in (Schotch and Jennings, 1980). Finally we propose a syntactic translation of the purely implicative part of Jaśkowski's system D₂ into a classical system preserving all the theorems (and non-theorems) explicilty mentioned in (Jaśkowski, 1969). The translation method can be used in order to develop epistemic semantics for a larger class of non-adjunctive (discursive) logics than the ones historically investigated by Jaśkowski. (shrink)

This is a study in the meaning of natural language probability operators, sentential operators such as probably and likely. We ask what sort of formal structure is required to model the logic and semantics of these operators. Along the way we investigate their deep connections to indicative conditionals and epistemic modals, probe their scalar structure, observe their sensitivity to contex- tually salient contrasts, and explore some of their scopal idiosyncrasies.

We find suggestive evidence that emotional balance has an impact on probability weighting incremental to demographic controls. Specifically, low negative affectivity (implying high emotional balance) tends to be a characteristic of those whose probability weighting functions exhibit lower curvature and more neutral elevation. In other words, emotional balance seems to push people in the direction of normative expected utility theory.

A feature of the agro-industrial sphere is the high probability of distribution of production or research sites in areas far from each other for a considerable distance. Moreover, the center for collecting information and processing it, as a rule, is concentrated in one compact place. For research institutions, this feature often acquires a state of rather urgent problem, which requires the search for new innovative approaches. The paper proposes elements of the concept of construction and technological solutions for (...) methods of operational data transfer of field research from agricultural areas to a remote database for data storage with the possibility of feedback. As an example, the procedure of qualification examination of plant varieties with the definition of the criteria of "difference, homogeneity and stability" and "suitability for propagation of the variety in Ukraine" was chosen. (shrink)

A feature of the agro-industrial sphere is the high probability of distribution of production or research sites in areas far from each other for a considerable distance. Moreover, the center for collecting information and processing it, as a rule, is concentrated in one compact place. For research institutions, this feature often acquires a state of rather urgent problem, which requires the search for new innovative approaches. The paper proposes elements of the concept of construction and technological solutions for (...) methods of operational data transfer of field research from agricultural areas to a remote database for data storage with the possibility of feedback. As an example, the procedure of qualification examination of plant varieties with the definition of the criteria of "difference, homogeneity and stability" and "suitability for propagation of the variety in Ukraine" was chosen. (shrink)

Two kinds of probability expressions, verbal and numerical, have been used to characterize the uncertainty that people face. However, the question of whether verbal and numerical probabilities are cognitively processed in a similar manner remains unresolved. From a levels-of-processing perspective, verbal and numerical probabilities may be processed differently during early sensory processing but similarly in later semantic-associated operations. This event-related potential (ERP) study investigated the neural processing of verbal and numerical probabilities in risky choices. The results showed that verbal (...) probability and numerical probability elicited different N1 amplitudes but that verbal and numerical probabilities elicited similar N2 and P3 waveforms in response to different levels of probability (high to low). These results were consistent with a level-of-processing framework and suggest some internal consistency between the cognitive processing of verbal and numerical probabilities in risky choices. Our findings shed light on possible mechanism underlying probability expression and may provide the neural evidence to support the translation of verbal to numerical probabilities (or vice versa). (shrink)

Bohmian mechanics is arguably the most naively obvious embedding imaginable of Schr¨ odinger’s equation into a completely coherent physical theory. It describes a world in which particles move in a highly non-Newtonian sort of way, one which may at first appear to have little to do with the spectrum of predictions of quantum mechanics. It turns out, however, that as a consequence of the defining dynamical equations of Bohmian mechanics, when a system has wave function ψ its configuration is typically (...) random, with probability density ρ given by |ψ|2, the quantum equilibrium distribution. It also turns out that the entire quantum formalism, operators as observables and all the rest, naturally emerges in Bohmian mechanics from the analysis of “measurements.” This analysis reveals the status of operators as observables in the description of quantum phenomena, and facilitates a clear view of the range of applicability of the usual quantum mechanical formulas. (shrink)

In this paper we analyze two recent conditional interpretations of defaults, one based on probabilities, and the other, on models. We study what makes them equivalent, explore their limitations and develop suitable extensions. The resulting framework ties together a number of important notions in default reasoning, like high-probabilities and model-preference, default priorities and argument systems, and independence assumptions and minimality considerations.

Adams’ thesis is generally agreed to be linguistically compelling for simple conditionals with factual antecedent and consequent. We propose a derivation of Adams’ thesis from the Lewis- Kratzer analysis of if-clauses as domain restrictors, applied to probability operators. We argue that Lewis’s triviality result may be seen as a result of inexpressibility of the kind familiar in generalized quantifier theory. Some implications of the Lewis- Kratzer analysis are presented concerning the assignment of probabilities to compounds of conditionals.

The thermodynamic behavior is analyzed of a single classical charged particle in thermal equilibrium with classical electromagnetic thermal radiation, while electrostatically bound by a fixed charge distribution of opposite sign. A quasistatic displacement of this system in an applied electrostatic potential is investigated. Treating the system nonrelativistically, the change in internal energy, the work done, and the change in caloric entropy are all shown to be expressible in terms of averages involving the distribution of the position coordinates alone. A convenient (...) representation for the probability distribution is shown to be the ensemble average of the absolute square value of an expansion over the eigenstates of a Schrödinger-like equation, since the heat flow is shown to vanish for each hypothetical “state.” Subject to key assumptions highlighted here, the demand that the entropy be a function of state results in statistical averages in agreement with the form in quantum statistical mechanics. Examining the very low and very high temperature situations yields Planck's and Boltzmann's constants. The blackbody radiation spectrum is then deduced. From the viewpoint of the theory explored here, the method in quantum statistical mechanics of statistically counting the “states” at thermal equilibrium by using the energy eigenvalue structure, is simply a convenient counting scheme, rather than actually representing averages involving physically discrete energy states. (shrink)

Under conditions of physiological stress, officers are sometimes required to make split-second life-or-death decisions, where deficits in performance can have tragic outcomes, including serious injury or death and strained police–community relations. The current study assessed the performance of 122 active-duty police officers during a realistic lethal force scenario to examine whether performance was affected by the officer’s level of operational skills training, years of police service, and stress reactivity. Results demonstrated that the scenario produced elevated heart rates, as well as (...) perceptual and cognitive distortions, such as tunnel vision, commensurate with those observed in naturalistic use of force encounters. The average performance rating from the scenario was 59%, with 27% of participants making at least one lethal force error. Elevated stress reactivity was a predictor of poorer performance and increased lethal force errors. Level of training and years of police service had differential and complex effects on both performance and lethal force errors. Our results illustrate the need to critically reflect on police training practices and continue to make evidence-based improvements to training. The findings also highlight that while training may significantly improve outcomes, flawless performance is likely not probable, given the limits of human performance under stress. Implications for the objective reasonableness standard, which is used to assess the appropriateness of force in courts of law, are discussed. (shrink)

This article explores the enduring mysteries of consciousness and the afterlife, two enigmatic topics that have fascinated humanity for ages. Despite extensive scientific efforts, the existence of an afterlife remains unproven, and understanding consciousness remains a significant challenge. The research introduces innovative hypotheses through simple thought experiments with empirical evidence and robust theoretical foundations. It delves into the complexities of consciousness, its relationship with the brain, and the need for interdisciplinary approaches encompassing physics, psychology, and philosophy. Boldly contemplating the (...) class='Hi'>probability of a continuous consciousness after death, the study argues that existing evidence strongly supports this idea. Beyond theoretical implications, it envisions practical outcomes, suggesting that insights into these mysteries could enhance human well-being and contribute to a more harmonious world. In summary, this article embarks on a quest to shed light on age-old questions about consciousness and the afterlife. Through fresh methodologies, it aims to provide new perspectives that could reshape our understanding of existence and inspire intellectuals to positive individual and societal advancements. -/- . (shrink)

There are many scientific and everyday cases where each of Pr and Pr is high and it seems that Pr is high. But high probability is not transitive and so it might be in such cases that each of Pr and Pr is high and in fact Pr is not high. There is no issue in the special case where the following condition, which I call “C1”, holds: H 1 entails H 2. This condition (...) is sufficient for transitivity in high probability. But many of the scientific and everyday cases referred to above are cases where it is not the case that H 1 entails H 2. I consider whether there are additional conditions sufficient for transitivity in high probability. I consider three candidate conditions. I call them “C2”, “C3”, and “C2&3”. I argue that C2&3, but neither C2 nor C3, is sufficient for transitivity in high probability. I then set out some further results and relate the discussion to the Bayesian requirement of coherence. (shrink)

Suppose one hundred prisoners are in a yard under the supervision of a guard, and at some point, ninety-nine of them collectively kill the guard. If, after the fact, a prisoner is picked at random and tried, the probability of his guilt is 99%. But despite the high probability, the statistical chances, by themselves, seem insufficient to justify a conviction. The question is why. Two arguments are offered. The first, decision-theoretic argument shows that a conviction solely based (...) on the statistics in the prisoner scenario is unacceptable so long as the goal of expected utility maximization is combined with fairness constraints. The second, risk-based argument shows that a conviction solely based on the statistics in the prisoner scenario lets the risk of mistaken conviction surge potentially too high. The same, by contrast, cannot be said of convictions solely based on DNA evidence or eyewitness testimony. A noteworthy feature of the two arguments in the paper is that they are not confined to criminal trials and can in fact be extended to civil trials. (shrink)

Part of The US Army Large-Scale Combat Operations Series, Maintaining the High Ground combines discussions and historical case studies from the past seventy-five years to address ethical challenges for the Army Profession. With today's all-volunteer Army, maintaining public trust is critical, and large-scale combat operations require a professional class of leaders and soldiers with strong ethics and the ability to adapt and even shape their own future.

Motivated by a recent proof of free choices in linking equations to the experiments they describe, I clarify some relations among purely mathematical entities featured in quantum mechanics (probabilities, density operators, partial traces, and operator-valued measures), thereby allowing applications of these entities to the modeling of a wider variety of physical situations. I relate conditional probabilities associated with projection-valued measures to conditional density operators identical, in some cases but not in others, to the usual reduced density operators. (...) While a fatal obstacle precludes associating conditional density operators with general non-projective measures, tensor products of general positive operator-valued measures (POVMs) are associated with conditional density operators. This association together with the free choice of probe particles allows a postulate of state reductions to be replaced by a theorem. An application shows an equivalence between one form of quantum key distribution and another with respect to certain eavesdropping attacks. (shrink)

The paper focuses on extending to the first order case the semantical program for modalities first introduced by Dana Scott and Richard Montague. We focus on the study of neighborhood frames with constant domains and we offer in the first part of the paper a series of new completeness results for salient classical systems of first order modal logic. Among other results we show that it is possible to prove strong completeness results for normal systems without the Barcan Formula (like (...) FOL + K)in terms of neighborhood frames with constant domains. The first order models we present permit the study of many epistemic modalities recently proposed in computer science as well as the development of adequate models for monadic operators of high probability. Models of this type are either difficult of impossible to build in terms of relational Kripkean semantics [40].We conclude by introducing general first order neighborhood frames with constant domains and we offer a general completeness result for the entire family of classical first order modal systems in terms of them, circumventing some well-known problems of propositional and first order neighborhood semantics (mainly the fact that many classical modal logics are incomplete with respect to an unmodified version of either neighborhood or relational frames). We argue that the semantical program that thus arises offers the first complete semantic unification of the family of classical first order modal logics. (shrink)

We develop the concept of quantum probability based on ideas of R. Feynman. The general guidelines of quantum probability are translated into rigorous mathematical definitions. We then compare the resulting framework with that of operational statistics. We discuss various relationship between measurements and define quantum stochastic processes. It is shown that quantum probability includes both conventional probability theory and traditional quantum mechanics. Discrete quantum systems, transition amplitudes, and discrete Feynman amplitudes are treated. We close with some (...) examples that illustrate previously defined concepts. (shrink)

Explaining the emergence of stochastic irreversible macroscopic dynamics from time-reversible deterministic microscopic dynamics is one of the key problems in philosophy of physics. The Mori-Zwanzig projection operator formalism, which is one of the most important methods of modern nonequilibrium statistical mechanics, allows for a systematic derivation of irreversible transport equations from reversible microdynamics and thus provides a useful framework for understanding this issue. However, discussions of the MZ formalism in philosophy of physics tend to focus on simple variants rather than (...) on the more sophisticated ones used in modern physical research. In this work, I will close this gap by studying the problems of probability and irreversibility using the example of Grabert’s time-dependent projection operator formalism. This allows to better understand how general proposals for understanding probability in statistical mechanics, namely quantum approaches and almost-objective probabilities, can be accomodated in the MZ formalism. Moreover, I will provide a detailed physical analysis, based on the MZ formalism, of various proposals from the philosophical literature, such as Robertson’s theory of justifying coarse-graining via autonomous macrodynamics, Myrvold’s problem of explaining autonomous macrodynamics, and Wallace’s simple dynamical conjecture. (shrink)

We use joint probabilities to analyze the EPR argument in the Bohm's example of spins.(1) The properties of distribution functions for two, three, or more noncommuting spin components are explicitly studied and their limitations are pointed out. Within the statistical ensemble interpretation of quantum theory (where only statements about repeated events can be made), the incompleteness of quantum theory does not follow, as the consistent use of joint probabilities shows. This does not exclude a completion of quantum mechanics, going beyond (...) it, by a more general theory of single events, using hidden variables, for example. (shrink)

Late last year the English Court of Appeal confirmed a lower court's ruling that doctors could impose an operation to separate recently born conjoined twins, overriding the refusal of consent of their parents. The doctors believed the operation would probably save one of the babies at the cost of killing the other, while not operating would highly probably be followed by the death of both twins within months of their birth. The parents, said to be devout Roman Catholics, believed that (...) it was absolutely wrong to kill one of their babies, even to save the life of the other.Undoubtedly many people, the writer included, would agree with the English courts that the “least worst” option was to separate the twins and save one at the cost of killing the other. But surely many fewer people would have imposed their own resolution of this acute moral dilemma upon parents who conscientiously chose the other limb of the dilemma, refusing to kill one baby even in order to save the other. Were the English judges right, then, to take away the parents' normal right and duty to make health care decisions on behalf of their children and instead impose their own answer to what they admitted to be a terrible dilemma? Describing the two alternatives in terms of choosing between the lesser of two evils on the one hand, and the obligation not to kill on the other, Lord Justice Ward declared, according to The Times law report,1 that: “Parents who were placed on the horns of such a terrible dilemma simply had to choose the lesser of their inevitable loss [sic]”. But that surely is to beg the moral question in favour of the judges' preferred answer to this moral dilemma. The fact is that there are—as …. (shrink)

The paper focuses on extending to the first order case the semantical program for modalities first introduced by Dana Scott and Richard Montague. We focus on the study of neighborhood frames with constant domains and we offer in the first part of the paper a series of new completeness results for salient classical systems of first order modal logic. Among other results we show that it is possible to prove strong completeness results for normal systems without the Barcan Formula (like (...) FOL + K)in terms of neighborhood frames with constant domains. The first order models we present permit the study of many epistemic modalities recently proposed in computer science as well as the development of adequate models for monadic operators of high probability. Models of this type are either difficult of impossible to build in terms of relational Kripkean semantics [40].We conclude by introducing general first order neighborhood frames with constant domains and we offer a general completeness result for the entire family of classical first order modal systems in terms of them, circumventing some well-known problems of propositional and first order neighborhood semantics (mainly the fact that many classical modal logics are incomplete with respect to an unmodified version of either neighborhood or relational frames). We argue that the semantical program that thus arises offers the first complete semantic unification of the family of classical first order modal logics. (shrink)

The paper focuses on extending to the first order case the semantical program for modalities first introduced by Dana Scott and Richard Montague. We focus on the study of neighborhood frames with constant domains and we offer in the first part of the paper a series of new completeness results for salient classical systems of first order modal logic. Among other results we show that it is possible to prove strong completeness results for normal systems without the Barcan Formula (like (...) FOL + K)in terms of neighborhood frames with constant domains. The first order models we present permit the study of many epistemic modalities recently proposed in computer science as well as the development of adequate models for monadic operators of high probability. Models of this type are either difficult of impossible to build in terms of relational Kripkean semantics [40].We conclude by introducing general first order neighborhood frames with constant domains and we offer a general completeness result for the entire family of classical first order modal systems in terms of them, circumventing some well-known problems of propositional and first order neighborhood semantics (mainly the fact that many classical modal logics are incomplete with respect to an unmodified version of either neighborhood or relational frames). We argue that the semantical program that thus arises offers the first complete semantic unification of the family of classical first order modal logics. (shrink)

According to influential views the probabilities in classical statistical mechanics and other special sciences are objective chances, although the underlying mechanical theory is deterministic, since the deterministic low level is inadmissible or unavailable from the high level. Here two intuitions pull in opposite directions: One intuition is that if the world is deterministic, probability can only express subjective ignorance. The other intuition is that probability of high-level phenomena, especially thermodynamic ones, is dictated by the state of (...) affairs in the world. We argue in support of this second intuition and we show that in fact there are two different ways in which high-level probability describes matters of fact, even if the underlying microscopic reality is deterministic. Our analysis is novel, but supports approaches by, e.g., Loewer, Albert, Frigg and Hoefer, List and Pivato. In particular, the reductive view we propose here can be seen as a naturalization of the above approaches. We consider consequences of our result for nonreductive physicalist approaches, such as functionalism, that admit multiple realization of the kinds that appear in the special sciences by physical kinds. We show that nonreductive physicalism implies the existence of nonphysical matters of fact. (shrink)

The \\)-Robertson–Walker spacetime is under investigation. With the derived Hamilton operator, we are solving the Wheeler–De Witt Equation and its Schrödinger-like extension, for physically important forms of the effective potential. The closed form solutions, expressed in terms of Heun’s functions, allow us to comment on the occurrence of Universe from highly probable quantum states.

It is defined in the article that large amount of factors have impact on restaurant businesses' management in Ukraine. Attraction of the business is caused by close links between tourism and recreation businesses and hotel and restaurant business, resulting in a high probability of rapid payback of investments. It is determined that actual problems and tasks have to be solved for restaurant businesses development in Ukraine. Main obstacles that prevent from dynamic growth of restaurant business include military operations (...) in the country and crisis in the socio-economic sphere, reduction of the possibilities of visiting the catering facilities by the population, negative experience of cooperation between restaurant businesses and national supervisory authorities, the poor quality of raw materials, logistics, inefficient use of capital, low level of informatization of business, poor effectiveness of providing units at restaurant businesses, poor coordination work of restaurant facilities with other members of the recreation business, lack of a significant interest in new types of catering and diversification of sales channels. Elimination of these problems will significantly improve the efficiency of solution of modern problems in catering businesses, improve customer service by individualizing services and introduction of new services, improve staff qualifications and improve marketing work on promotion of goods and services on the market. Processing of scientific approaches and practical recommendations of various authors let us find out that an important area of rationalization of management process of development of restaurant business is job of marketing, supply, sales and information technology departments. Successful execution of the functions of mentioned departments of the restaurant sector is able to create popular on the market products and services, establish high quality sales and thus create the potential for increase in efficiency. (shrink)

Studies using Posner’s spatial cueing paradigm have demonstrated that participants can allocate their attention to specific target locations based on the predictiveness of preceding cues. Four experiments were conducted to investigate attentional orienting processes operating in a high probability condition as compared to a low probability condition using various types of centrally-presented cues. Spatially-informative cues resulted in cueing effects for both probability conditions, with significantly larger CEs in the high probability conditions than the low (...) probability conditions. Participants in the high probability conditions reported little or no awareness of cue–target probabilities after task completion. Our results provide support for an implicit learning account of the proportion valid effect under experimental conditions involving spatially-informative central cues and relatively short stimulus onset asynchronies. (shrink)

There is presently considerable interest in the phenomenon of "self-organisation" in dynamical systems. The rough idea of self-organisation is that a structure appears "by itself in a dynamical system, with reasonably high probability, in a reasonably short time, with no help from a special initial state, or interaction with an external system. What is often missed, however, is that the standard evolutionary account of the origin of multi-cellular life fits this definition, so that higher living organisms are also (...) products of self-organisation. Very few kinds of object can selforganise, and the question of what such objects are like is a suitable mathematical problem. Extending the familiar notion of algorithmic complexity into the context of dynamical systems, we obtain a notion of "dynamical complexity". A simple theorem then shows that only objects of very low dynamical complexity can self organise, so that living organisms must be of low dynamical complexity. On the other hand, symmetry considerations suggest that living organisms are highly complex, relative to the dynamical laws, due to their large size and high degree of irregularity. In particular, it is shown that since dynamical laws operate locally, and do not vary across space and time, they cannot produce any specific large and irregular structure with high probability in a short time. These arguments suggest that standard evolutionary theories of the origin of higher organisms are incomplete. (shrink)

The question asked in this article is: what is a parasite?. Defining a parasite requires defining its host at the same time. A difficult question therefore arises about host-parasite relationships. The object of general parasitology is in fact to study the relationship between a host and its parasite. The initial question what is a parasite? has to be reformulated within a conceptual framework, that of relationship. This article is an attempt to transpose into parasitology some concepts which have been profitable (...) in the fields of physics and chemistry. The studies of R. Thom about the individual are also used. Concepts like that of field and principles like that of minimization are probably operational on a high level of organization. The description of host-parasite relationships could benefit from these concepts. (shrink)

In lieu of an abstract, here is a brief excerpt of the content:Philosophy, Psychiatry, & Psychology 10.4 (2003) 369-372 [Access article in PDF] Unity of Agency and Volition:Some Personal Reflections Stephen Weiner The issues of unity of agency, self-as-narrative, and more generally, volition are highly personal to me. Indeed, I would say I have frequently been obsessed with them. I am 52 years old, and date the onset of my psychiatric symptoms—my long-term misery—very specifically: 11:00 pm Pacific Standard Time, August (...) 28, 1965. At almost precisely that time, I started obsessing that I was homosexual and, in fact, turning into a girl. Within days, derealization followed: for instance, the houses in my neighborhood seemed one-dimensional—they seemed as though they were painted, as though I could stick my hand or an object through them. Colors seemed less bright as well—but I hardly had words for all this at the time: it was an overwhelmingly preverbal feeling, but I found some words for it.I was also depressed, and knew I was depressed—that is, I was worried, had trouble sleeping, and had suicidal thoughts and feelings. Within weeks, I asked my parents if I could see a psychiatrist, and I did. I remember asking my psychiatrist if he ever thought about the possibility that everything might be an illusion, and he quoted the refrain from "Row, Row, Row Your Boat": "merrily, merrily, merrily, merrily, life is but a dream." But just asking him produced a chilling feeling that he did not exist and, largely for this reason, I did not mention unreality feelings again to therapists for another 20 years.So, like Dr. Wells' patient Edward, described by James Phillips (2003), I was in trouble; like Edward, I was starting to construct a narrative. I started feeling that I had "to tell my story" at about this time—before then, I had not felt a need to do that. That may be partly because young children take life for granted (at least, I did), and it may be partly because suffering, by its very nature, demands explanation; both reasons were probably operating—certainly, both my parents told me years later that I had seemed emotionally distressed as a child, and my mother told they would have given me Ritalin if it had been available. So, to other people (my parents and my teachers) I was mentally ill in some sense, and I have some pretty clear memories of what I now recognize as depression, especially in the second and third grades; but I did not think of myself as sick and I did not think of myself as suffering—and I did not experience the duality (at least) of selves that I started to experience almost immediately in August 1965.Phillips further points out that the "future Edward" could look back in his narrative, at a later age, and reconstruct his history either as someone with a continuing mental illness, or as someone who had attained a secure, healthy adulthood and saw his experience as adolescent pain in the service of ultimate adult health and integration. I see my story, I am sorry to report, as [End Page 369] one of unremitting basic pain but with the positive dimension that I was able to go on, obtain a good education, work a good deal in my adult life, and father a child. But my narrative—and am I not, as a highly verbal person, almost constrained to think of my life as a narrative?—has been one, as Phillips (following Kleinman) realizes, of suffering. It is, above all else, an illness narrative. I find the approach of J. Melvin Woody (2003)—of privileging performing and performing arts and spatial metaphors over story—less relevant and true to myself, although I see no reason to argue with Mary's preference for such forms. It may be that the temporal discontinuities she has experienced predispose her to see herself in such terms—may, in fact, necessitate doing so. I am not exactly sure why, but it probably has to do with acting, with trying on and performing one role... (shrink)

In lieu of an abstract, here is a brief excerpt of the content:Philosophy, Psychiatry, & Psychology 10.4 (2003) 369-372 [Access article in PDF] Unity of Agency and Volition:Some Personal Reflections Stephen Weiner The issues of unity of agency, self-as-narrative, and more generally, volition are highly personal to me. Indeed, I would say I have frequently been obsessed with them. I am 52 years old, and date the onset of my psychiatric symptoms—my long-term misery—very specifically: 11:00 pm Pacific Standard Time, August (...) 28, 1965. At almost precisely that time, I started obsessing that I was homosexual and, in fact, turning into a girl. Within days, derealization followed: for instance, the houses in my neighborhood seemed one-dimensional—they seemed as though they were painted, as though I could stick my hand or an object through them. Colors seemed less bright as well—but I hardly had words for all this at the time: it was an overwhelmingly preverbal feeling, but I found some words for it.I was also depressed, and knew I was depressed—that is, I was worried, had trouble sleeping, and had suicidal thoughts and feelings. Within weeks, I asked my parents if I could see a psychiatrist, and I did. I remember asking my psychiatrist if he ever thought about the possibility that everything might be an illusion, and he quoted the refrain from "Row, Row, Row Your Boat": "merrily, merrily, merrily, merrily, life is but a dream." But just asking him produced a chilling feeling that he did not exist and, largely for this reason, I did not mention unreality feelings again to therapists for another 20 years.So, like Dr. Wells' patient Edward, described by James Phillips (2003), I was in trouble; like Edward, I was starting to construct a narrative. I started feeling that I had "to tell my story" at about this time—before then, I had not felt a need to do that. That may be partly because young children take life for granted (at least, I did), and it may be partly because suffering, by its very nature, demands explanation; both reasons were probably operating—certainly, both my parents told me years later that I had seemed emotionally distressed as a child, and my mother told they would have given me Ritalin if it had been available. So, to other people (my parents and my teachers) I was mentally ill in some sense, and I have some pretty clear memories of what I now recognize as depression, especially in the second and third grades; but I did not think of myself as sick and I did not think of myself as suffering—and I did not experience the duality (at least) of selves that I started to experience almost immediately in August 1965.Phillips further points out that the "future Edward" could look back in his narrative, at a later age, and reconstruct his history either as someone with a continuing mental illness, or as someone who had attained a secure, healthy adulthood and saw his experience as adolescent pain in the service of ultimate adult health and integration. I see my story, I am sorry to report, as [End Page 369] one of unremitting basic pain but with the positive dimension that I was able to go on, obtain a good education, work a good deal in my adult life, and father a child. But my narrative—and am I not, as a highly verbal person, almost constrained to think of my life as a narrative?—has been one, as Phillips (following Kleinman) realizes, of suffering. It is, above all else, an illness narrative. I find the approach of J. Melvin Woody (2003)—of privileging performing and performing arts and spatial metaphors over story—less relevant and true to myself, although I see no reason to argue with Mary's preference for such forms. It may be that the temporal discontinuities she has experienced predispose her to see herself in such terms—may, in fact, necessitate doing so. I am not exactly sure why, but it probably has to do with acting, with trying on and performing one role... (shrink)

In lieu of an abstract, here is a brief excerpt of the content:Hume: Between Leibniz and Kant (The role of pre-established harmony in Hume's philosophy) Vadim Vasilyev 1. Introduction In the history of eighteenth century European philosophy, Hume appears as an important connecting link between Leibniz and Kant. I mean, however, not only the well-known historical fact that Hume "awakened Kant from his dogmatic slumber" (and it was the "dogmatism" ofLeibnizian metaphysics), but I shall try to show that it is (...) true from the philosophical point of view as well. The first problem I would like to discuss is the actual relationship between Hume and Leibniz. Hume never openly criticized the views of Leibniz. On the other hand, Hume did not admit himself to be a follower of him. Did Hume everread any works ofLeibniz? Hume has never said thathe did. Hume also hasn't directly quoted these works, so it looks like Hume wasn't acquainted with them at all. Nonetheless, we can show that already in 1739 Hume had known Theodicée which can be considered as the main treatise ofLeibniz. In his Abstract Hume writes: The celebratedMonsieurLeibnitz has observed it tobe a defect in the common systems of logic, that they are very copious when they explain the operations ofthe understanding in the forming ofdemonstrations, but are too concise when they treat of probabilities, and those other measures of evidence on which life and action entirely depend, and which are our guides even in most of our philosophical speculations. In this censure, he comprehends the essay on human understanding, Ie recherche de la vérité, and l'art dépenser.1 The fragment is a rendering of the following passage from Theodicée: caril n'y a rien de plus impartaitqui nostre Logique, lorsqu'on va au delà des argumens nécessaires; et les plus excellens philosophes de nostre temps, tels que les Auteurs de l'Art de penser, de la Recherche de la vérité, et de l'Essai sur Volume XLX Number 1 19 VADIMVASILYEV l'entendment, ont été fort éloignés de nous marquer les vrais moyens propres à aider cette faculté qui nous doit faire peser les apparences du vrait et du faux: sans parler de l'art d'inventer.2 So, it is highly probable that Hume knew Theodicée. The ideas ofLeibniz in Hume's philosophy The most important philosophical ideas of Theodicée are: the definitions ofpossibility and oftwo kinds ofnecessity, a theory of"the best possible world" and a conception ofthe pre-established harmony. As we shall see, all these ideas, one way or another, were assimilated by Hume. In his Theodicée Leibniz states that a distinction should be made between two kinds of necessity and, correspondingly, between two kinds ofnecessary knowledge: metaphysical and moral.? ne faut done que bien entendre des distinctions, comme celle que nous avons pressée bien souvent entre le necessaire et le certain, et entre la nécessité métaphysique et la nécessité morale. (Theodicée, 284, par. 282) Metaphysical or mathematical truths are such that propositions which are opposite to them imply contradictions. Or les vérités de la Raison sont de deux sortes; les unes sont ce qu'on appelle les Vérités Eternelles, qui sont abolument nécessaires, en sorte que l'opposé implique contradiction. (Theodicée, 50, par. 2) Not so regarding the moral truths; the opposite statements may be false but they imply no contradictions and are possible: "? est vray qu'il n'y auroit point eu de contradiction dans la supposition que Spinosa fût mort à Leide, et non pas à La Haye; il n'y auroit rien de si possible" (Theodicée, 218, par. 174). The possibility is equivalent to logical consistency and what is possible may be distinctly conceived: puisqu'il y a bien des choses qui ne sont jamais arrivées et n'arriveront jamais, et qui cependant sont concevables distinctement, et n'impliquent aucune contradiction, comment peut on dire qu'elles sont absolument impossibles? (Theodicée, 257, par. 234) 20Hume Studies HUME: BETWEEN LEIBNIZ AND KANT Hume uses all these definitions. The following fragment is a good example. The non-existence ofany being, without exception, is as clear and distinct an... (shrink)

In lieu of an abstract, here is a brief excerpt of the content:Hume: Between Leibniz and Kant (The role of pre-established harmony in Hume's philosophy) Vadim Vasilyev 1. Introduction In the history of eighteenth century European philosophy, Hume appears as an important connecting link between Leibniz and Kant. I mean, however, not only the well-known historical fact that Hume "awakened Kant from his dogmatic slumber" (and it was the "dogmatism" ofLeibnizian metaphysics), but I shall try to show that it is (...) true from the philosophical point of view as well. The first problem I would like to discuss is the actual relationship between Hume and Leibniz. Hume never openly criticized the views of Leibniz. On the other hand, Hume did not admit himself to be a follower of him. Did Hume everread any works ofLeibniz? Hume has never said thathe did. Hume also hasn't directly quoted these works, so it looks like Hume wasn't acquainted with them at all. Nonetheless, we can show that already in 1739 Hume had known Theodicée which can be considered as the main treatise ofLeibniz. In his Abstract Hume writes: The celebratedMonsieurLeibnitz has observed it tobe a defect in the common systems of logic, that they are very copious when they explain the operations ofthe understanding in the forming ofdemonstrations, but are too concise when they treat of probabilities, and those other measures of evidence on which life and action entirely depend, and which are our guides even in most of our philosophical speculations. In this censure, he comprehends the essay on human understanding, Ie recherche de la vérité, and l'art dépenser.1 The fragment is a rendering of the following passage from Theodicée: caril n'y a rien de plus impartaitqui nostre Logique, lorsqu'on va au delà des argumens nécessaires; et les plus excellens philosophes de nostre temps, tels que les Auteurs de l'Art de penser, de la Recherche de la vérité, et de l'Essai sur Volume XLX Number 1 19 VADIMVASILYEV l'entendment, ont été fort éloignés de nous marquer les vrais moyens propres à aider cette faculté qui nous doit faire peser les apparences du vrait et du faux: sans parler de l'art d'inventer.2 So, it is highly probable that Hume knew Theodicée. The ideas ofLeibniz in Hume's philosophy The most important philosophical ideas of Theodicée are: the definitions ofpossibility and oftwo kinds ofnecessity, a theory of"the best possible world" and a conception ofthe pre-established harmony. As we shall see, all these ideas, one way or another, were assimilated by Hume. In his Theodicée Leibniz states that a distinction should be made between two kinds of necessity and, correspondingly, between two kinds ofnecessary knowledge: metaphysical and moral.? ne faut done que bien entendre des distinctions, comme celle que nous avons pressée bien souvent entre le necessaire et le certain, et entre la nécessité métaphysique et la nécessité morale. (Theodicée, 284, par. 282) Metaphysical or mathematical truths are such that propositions which are opposite to them imply contradictions. Or les vérités de la Raison sont de deux sortes; les unes sont ce qu'on appelle les Vérités Eternelles, qui sont abolument nécessaires, en sorte que l'opposé implique contradiction. (Theodicée, 50, par. 2) Not so regarding the moral truths; the opposite statements may be false but they imply no contradictions and are possible: "? est vray qu'il n'y auroit point eu de contradiction dans la supposition que Spinosa fût mort à Leide, et non pas à La Haye; il n'y auroit rien de si possible" (Theodicée, 218, par. 174). The possibility is equivalent to logical consistency and what is possible may be distinctly conceived: puisqu'il y a bien des choses qui ne sont jamais arrivées et n'arriveront jamais, et qui cependant sont concevables distinctement, et n'impliquent aucune contradiction, comment peut on dire qu'elles sont absolument impossibles? (Theodicée, 257, par. 234) 20Hume Studies HUME: BETWEEN LEIBNIZ AND KANT Hume uses all these definitions. The following fragment is a good example. The non-existence ofany being, without exception, is as clear and distinct an... (shrink)

The paper focuses on extending to the first order case the semantical program for modalities first introduced by Dana Scott and Richard Montague. We focus on the study of neighborhood frames with constant domains and we offer a series of new completeness results for salient classical systems of first order modal logic. Among other results we show that it is possible to prove strong completeness results for normal systems without the Barcan Formula in terms of neighborhood frames with constant domains. (...) The first order models we present permit the study of many epistemic modalities recently proposed in computer science as well as the development of adequate models for monadic operators of high probability. Models of this type are either difficult of impossible to build in terms of relational Kripkean semantics. We conclude by introducing general first order neighborhood frames and we offer a general completeness result in terms of them which circumvents some well-known problems of propositional and first order neighborhood semantics. We argue that the semantical program that thus arises surpasses both in expressivity and adequacy the standard Kripkean approach, even when it comes to the study of first order normal systems. (shrink)

We discuss a generalization of the standard notion of probability space and show that the emerging framework, to be called operational probability theory, can be considered as underlying quantal theories. The proposed framework makes special reference to the convex structure of states and to a family of observables which is wider than the familiar set of random variables: it appears as an alternative to the known algebraic approach to quantum probability.

Starting from the recent quest to investigate the human side of organizational sustainability, this study applies a variety of regression analyses to investigate the effects of Lean Operations, High Involvement Work Practices, and management behaviors on occupational safety. It tests and finds support for the hypotheses that Lean Production systems, High Involvement Work Practices, and two specific management behaviors—workers’ capability development and empowerment —positively affect occupational safety. Furthermore, empowering behaviors positively moderate the effect of Lean Operations on workers’ (...) safety. The study bridges sustainable operations literature with theories related to the ethical side of safety management, sustainable HRM, ethical leadership, and empowerment. In doing so, it contributes to the understanding of occupational safety as constitutive aspect of organizational sustainability. (shrink)