Some commentators have argued that there is no room in Aristotle's natural science for simple, or unconditional, physical necessity, for the only necessity that governs all natural substances is hypothetical and teleological. Against this view I argue that, according to Aristotle, there are two types of unconditional physical necessity at work in the material elements, the one teleological, governing their natural motions, and the other non-teleological, governing their physical interaction. I argue as well that (...) these two types of simple necessity also govern everything made out of the elements, that is, all other natural substances and artifacts. (shrink)

A system HW of normal modal logic, developed by R. Bigelow & R. Pargetter is presented. Some formal issues concerning the system are examined, such as completeness, number of distinct modalities and relations to other systems. Some philosophical topics are also discussed. The Authors interpret the system HW as the system of physical (nomic) modalities. It is questioned, whether or not the system HW is justified to be claimed to be the logic of physical necessity. The answer (...) seems to may be negative. (shrink)

The very last of words of Naming and Necessity are ‘The third lecture suggests that a good deal of what contemporary philosophy regards as mere physical necessity is actually necessary tout court. The question how far this can be pushed is one I leave for further work.’ Kripke (1980). To my knowledge he never conducted that further work; moreover, no one following him has wished to take up the baton either. Herein, I argue that in general, (...) class='Hi'>physical necessity is neither reducible to, nor implies, tout court necessity. Furthermore, it is demonstrated that even if Kripke’s speculations are restricted to a subset of the physical necessities where it might be granted that all such are necessary tout court, physical necessity is still not reducible to tout court necessity. (shrink)

In this chapter I assume that we accept, perhaps reluctantly, general facts, that is states of affairs corresponding to universal generalizations. I then argue that, without any addition, this ontology provides us with physical necessities, and moreover with various grades of physical necessity, including the strongest grade, which I call absolute physical necessity. In addition there are consequences for our understanding of time. For this account, which I call the Mortmain Theory, provides a defence of (...) No Futurism against an otherwise serious objection due to David Armstrong. In addition the Mortmain theory enables me to argue against the ‘‘Parmenidean’’ or Block Universe position that future and past are both real. (shrink)

Some philosophers, for example Quine, doubt the possibility of jointly using modalities and quantification. Simple model-theoretic considerations, however, lead to a reconciliation of quantifiers with such modal concepts as logical, physical, and ethical necessity, and suggest a general class of modalities of which these are instances. A simple axiom system, analogous to the Lewis systems S1 —S5, is considered in connection with this class of modalities. The system proves to be complete, and its class of theorems decidable.

This paper starts with an intuitive notion of representational spaces, which is intended to provide an improved version of Kuhn's concept of paradigms. It then proceeds to study the following topics in terms of this new notion: incommensurability, paradigm change, explanation of anomalies, explanation of regularities, explanation of irregularities, and physical necessity. In the course of the investigation, "representational space" gets clarified and defined. It is envisaged that this new concept should throw light on many issues in the (...) philosophy of science. (shrink)

In this article I argue for an empiricist view on laws. Some laws are fundamental in the sense that they are the result of inductive generalisations of observed regularities and at the same time in their formulation contain a new theoretical predicate. The inductive generalisations simul- taneously function as implicit definitions of these new predicates. Other laws are either explicit definitions or consequences of other previously established laws. I discuss the laws of classical mechanics, relativity theory and electromagnetism in detail. (...) Laws are necessary, whereas acciden- tal generalisations are not. But necessity here is not a modal concept, but rather interpreted as short for the semantic predicate “... is necessarily true”. Thus no modal logic is needed. The neces- sity attributed to law sentences is in turn interpreted as “necessary condition for the rest of the the- ory”, which is true since fundamental laws are implicit definitions of theoretical predicates use in the theory. (shrink)

Let Nomological Bound be the thesis that there is nothing objectively possible beyond what is physically possible. Nomological Bound has struck many as a live hypothesis. Nevertheless, in this article I provide a novel argument against it. Yet even though I claim that Nomological Bound is false, I argue that the boundaries of objective possibility can still be characterized intimately in terms of physical necessity. This is philosophically significant, for on a natural understanding it constitutes the powerful anti-sceptical (...) result that those who believe in physical necessity should not harbour any scepticism towards merely metaphysical possibilities. (shrink)

This book recounts a few ingenious attempts to derive physical theories by reason only, beginning with Descartes' geometric construction of the world, and finishing with recent derivations of quantum mechanics from natural axioms.

(No abstract is available for this citation).

I propose a different way of thinking about metaphysical and physical necessity: namely that the fundamental notion of necessity is what would ordinarily be called "truth in all physically possible worlds" – a notion which includes the standard physical necessities and the metaphysical ones as well; I suggest that the latter are marked off not as a stricter kind of necessity but by their epistemic status. One result of this reconceptualization is that the Descartes-Kripke argument (...) against naturalism need no longer trouble us. I end by relating the difference between my view and the standard view to the question, whether there could have been a different world than ours. (shrink)

Aristotle's doctrine of the four causes--formal, final, efficient and material--is famous. But Posterior Analytics B 11 lists "if certain things hold, it is necessary that this does" in place of a standard expression for the material cause. This cause has been dubbed the grounding cause. It has interested scholars since the Greek commentators, who simply assumed that Aristotle meant the material cause. This traditional thesis has been challenged by two views: first, that the grounding cause is a special type of (...) material cause ; second, that it is no material cause at all . ;I set out two arguments for the traditional thesis and consider nine objections to it. Since most of these objections, which constitute the support for the revisionist thesis, can be answered, I reject the revisionist thesis. But in my treatment of one objection it also becomes clear that the traditional thesis is mistaken. The grounding cause is a necessitating cause, yet in Physics B 9 Aristotle makes it clear that many material causes are not necessitating causes. Thus, some form of the modified traditional thesis is true. ;But which form? D. M. Balme suggests that Aristotle means to include only mathematical causes because hypothetical necessity covers all of the relation between matter and product in things which come to be. But Aristotle seems to accept necessitating material causes in several passages in the biological works. In other passages he seems to adopt the position Balme attributes to him. I argue that he does not actually adopt this position, and that he does accept simple necessity in some things which come to be. Thus, the grounding cause is a necessitating material cause, and such causes are found not only in mathematics, but also among things which come to be. (shrink)

The aim of the present article is to consider the shortcomings of the physicalist rainfall example set forth by Aristotle in Physics II.8. I first outline the ancient physicalist account of the coming-to-be of natural organisms and the accompanying rejection of the teleological character of such processes. Then I examine the rainfall example itself. The fundamental difficulty is that rainfall does not appear to have a proper nature. Hence it is not natural in the strict sense and cannot be used (...) in arguments either for or against natural teleology. Rainfall can at most have an end in a weak sense, which makes it inadequate as a paradigm. Furthermore, the physicalist conception of action for an end is itself flawed. I argue that they construe it anthropomorphically and falsely presuppose a symmetry between coming-to-be and ceasing-to-be. I would like to thank Hasse Hamalainen and Marcin Karas for looking at earlier drafts of this paper. I am also especially grateful for the numerous remarks and suggestions of three anonymous referees. (shrink)

I argue that although in his earlier work descartes thought of the laws of motion as "eternal truths," he later came to think of them as truths whose necessity is of a different type.

All statements describing physical reality are derived through interpretation of measurement results that requires a theory of the measuring instruments used to make the measurements. The ultimate measuring instrument is our body which displays its measurement results in our mind. Since a physical theory of our mind-body is unknown, the correct interpretation of its measurement results is unknown. The success of the physical sciences has led to a tendency to treat assumption in physics as indisputable facts. This (...) tendency hampers the development of new theories capable of addressing the foundations of mind. To show the possibility that false interpretations of experimental results have lead to equally false projections onto physical reality may have happened, the double slit experiment and special relativity experiments are examined in detail. I will show that strongly held a-priory beliefs characterizing measurement instruments have lead to unjustified but widely held concepts in physical theories. For example the assumption that material bodies have minds can change the interpretation of experiments to produce alternative physical theories. Since some material bodies have minds this paper calls for a review of the conscious observer’s role in the execution and interpretation of fundamental physics experiments in order to verify or challenge the basic beliefs adopted in standard physical theories. (shrink)

I wish to comment upon Mr. Hendel's suggestion along two lines: 1) the feasibility of Hume's solution; and 2) the implications of empiricism for man's freedom as knower and agent. Of course, Hume's skepticism did draw the "sting out of physical necessity and made it harmless," as Hendel indicates. But the force of this skepticism was also to impugn reason--or reasoning--and this the philosophes were unwilling to countenance. That man was an unknowable factor in an equally unknowable universe (...) did not fit in with their notion of a proper fruit of the philosophical enterprise. And though they were caught between the demands of the moral life and the persuasion of the scientific world view, their belief, that they should stick with the problem of talking about man and his world in the same categories without being skeptical about either, was sound. They must have felt that skepticism was a relatively easy and simple expedient, and a position incompatible with that of scientific naturalism. (shrink)

The problem of ‘applicability’ of mathematics to modern physical sciences has been labeled as an ‘unreasonably effective’ and unexplainable ‘miracle’ by prominent physicists such as Eugene Wigner a...

This paper aims to show that—and how—Plato’s notion of the receptacle in the Timaeus provides the conditions for developing a mathematical as well as a physical space without itself being space. In response to the debate whether Plato’s receptacle is a conception of space or of matter, I suggest employing criteria from topology and the theory of metric spaces as the most basic ones available. I show that the receptacle fulfils its main task–allowing the elements qua images of the (...) Forms to exist as sensible things by being that in which the elements appear, change and move–in virtue of being pure continuity. All further qualifications required for a full notion of space are derived solely from the content of the receptacle. (shrink)

This is a book about laws. Not, however, about the laws of which we learned in science classes at school: “scientific laws”. It is rather about those universalities which govern the world of facts, what Swartz calls “physical laws”—although this language is slightly misleading because the term is intended to cover the living as well as the non-living world. Of course, it may well be that a scientific law does capture the essence of a physical law, but not (...) necessarily or usually. A physical law by definition can never be false, whereas almost paradoxically nearly all scientific laws are false. (shrink)

The ontological argument appears in a multiplicity of forms. Over the past ten or twelve years, however, the philosophical community seems to have been concerned principally with those versions of the proof which claim that God is a necessary being. In contemporary literature, Professors Malcolm and Hartshorne have been the chief advocates of this view, both men holding that God must be conceived as a necessary being and that, as a result, his existence is able to be demonstrated a priori (...) . This claim has not gone unchallenged; indeed, numerous writers have argued that neither Malcolm nor Hartshorne has exercised due care in his use of ‘necessary’. That is, critics charge that the arguments of both men have only the appearance of validity, for in their reasonings the defenders of the a priori proof have tacitly assumed that God is a logically necessary being. Whether or not a being can be logically necessary, however, is a quaestio disputata . In fact, until recently the question was not in dispute at all—virtually all ‘competent judges’ agreed that only propositions could be spoken of as logically necessary, and thus that God must be defined as a physically or factually necessary being. But is the statement, ‘a physically necessary being exists’, logically true? Critics of the ontological argument think not; and in support of this view they offer analyses of ‘physical necessity’ which, they feel, not only give meaning to the phrase, but also show that a physically necessary being's existence can be proven only by some kind of a posteriori investigation. (shrink)

Contrasting accounts of physicalism and strong emergentism face two problems. According to the neutrality problem, contrasting supervenience-based formulations of these positions cannot be neutral with respect to certain unrelated metaphysical commitments. According to the collapse problem, emergent properties can be accounted for using an appropriately expansive physical ontology, rendering strong emergentism metaphysically suspect. I argue that both these problems can be solved with a principled distinction between emergent causal laws and physical laws. I propose such a distinction based (...) on a finite discontinuity in the behavior of fundamental physical constituents as a function of complexity. (shrink)

This paper discusses some serious difficulties for what we shall call the standard account of various kinds of relative necessity, according to which any given kind of relative necessity may be defined by a strict conditional - necessarily, if C then p - where C is a suitable constant proposition, such as a conjunction of physical laws. We argue, with the help of Humberstone, that the standard account has several unpalatable consequences. We argue that Humberstone’s alternative account (...) has certain disadvantages, and offer another - considerably simpler - solution. (shrink)

Thus the radical character of Hume's causal theory lies far more in its denial of externality to necessary causal connection than in any change he made in the character or status of the connection. It is obvious Hume did not mean his sceptical denial of the "reality" of the causal connection to imply that there is no association or connection between causes and effects. For to him the anarchy of chance, or "liberty," was the only alternative to the truth of (...) causal necessity; and his own "habit" necessity is designed to account for the fact that the universe and human life are not in reality anarchic. Yet in making causal connection a matter of mental association Hume came very close to subverting the idea of necessity despite himself. Had he developed his notion that necessity consists in the unopposable habit our minds form of passing from the idea of the cause to the idea of its effect, he might have seen that causal theory can be divested altogether of the idea of necessity without loss of order and regularity on either the mental or physical levels. Even though he did not do so, Hume's idea of necessity based on habit seems a somewhat attenuated version of causal necessity, since habit is not an inexorable force, and past conjunctions of a given cause and its effect in our experience do not in the least imply that future conjunctions will be the same. For when we anticipate the issue of an effect similar to past effects because the cause is similar to past causes, it is only by a mental presumption that we do so, a "determination of the mind to pass from one object to its usual attendant.". (shrink)

Kripke and putnam have argued that metaphysical necessity is truth in all possible worlds, Hence is a kind of logica necessity; it is this claim I argue against. My argument proceeds by way of my considering and elaborating an example to show that although 'gold has atomic number 79' be counted a metaphysically necessary truth, There is a possible world in which it is false; it turns out to be for all I show here at most a (...) class='Hi'>physical necessity, True in all those worlds structurally similar to the actual world. (shrink)

This paper explores the theory of freedom that Emilie du Châtelet advances in her essay “On Freedom.” Using contemporary terminology, we can characterize this theory as a version of agent-causal compatibilism. More specifically, the theory has the following elements: (a) freedom consists in the power to act in accordance with one’s choices, (b) freedom requires the ability to suspend desires and master passions, (c) freedom requires a power of self-motion in the agent, and (d) freedom is compatible with moral (...) class='Hi'>necessity but not with physical necessity. While these elements may at first appear disparate, the paper shows that they fit together quite well. The resulting theory is a surprising combination of doctrines that appear to be based on Samuel Clarke’s libertarian account of free will and doctrines that are reminiscent of the compatibilist accounts of John Locke, Anthony Collins, Gottfried Leibniz, and Thomas Hobbes. (shrink)

The conclusions drawn by Benjamin Libet from his work with collegues on the timing of somatosensorial conscious experiences has met with a lot of praise and criticism. In this issue we find three examples of the latter. Here I attempt to place the divide between the two opponent camps in a broader perspective by analyzing the question of the relation between physical timing, neural timing, and experiential timing. The nervous system does a sophisticated job of recombining and recoding messages (...) from the sensorial surfaces and if these processes are slighted in a theory, it might become necessary to postulate weird operations, including subjective back-referral. Neuroscientifically inspired theories are of necessity still based on guesses, extrapolations, and philosophically dubious manners of speech. They often assume some neural correlate of consciousness as a part of the nervous system that transforms neural activity in reportable experiences. The majority of neuroscientists appear to assume that the NCC can compare and bind activity patterns only if they arrive simultaneously at the NCC. This leads to a search for synchrony or to theories in terms of the compensation of differences in neural delays . This is the main dimension of the Libet discussion. Examples from vision research, such as “temporal-binding-by-synchrony” and the “flash-lag” effect, are then used to illustrate these reasoning patterns in more detail. Alternatively one could assume symbolic representations of time and space that are not coded in their own dimension . Unless such tags are multiplexed with the quality message , one gets a binding problem for tags. One of the hidden aspects of the discussion between Libet and opponents appears to be the following. Is the NCC smarter than the rest of the nervous system, so that it can solve the problems of local sign and timing on its own, or are these pieces of information coded symbolically early on in the system? A supersmart NCC appears to be the assumption of Libet's camp . The wish to distribute the smartness evenly across all stages of processing in the nervous system appears to motivate the opponents. I argue that there are reasons to side with the latter group. (shrink)

This article provides an explanation of Anselm’s understanding of necessity. Anselm did not write much about modality, and what he did write is puzzling. The dominant readings of Anselm see him as having two concepts of necessity, one merely physical or causal, the other logical or “alethic.” This article argues that Anselm has just one concept of necessity, which corresponds best to what is now called broadly logical or absolute necessity, but whose metaphysics is in (...) terms of powers and lacks of power. The rival interpretations of A. D. Smith, Thomas Williams, and Sandra Visser are discussed and criticized in detail. (shrink)

Necessity is a touchstone issue in the thought of Charles Peirce, not least because his pragmatist account of meaning relies upon modal terms. We here offer an overview of Peirce’s highly original and multi-faceted take on the matter. We begin by considering how a self-avowed pragmatist and fallibilist can even talk about necessary truth. We then outline the source of Peirce’s theory of representation in his three categories of Firstness, Secondness and Thirdness, (monadic, dyadic and triadic relations). These have (...) modal purport insofar as the first category corresponds to possibility, the second to mechanical necessity and the third to a kind of semantic or intentional necessity. We then turn to Peirce’s explicit modal epistemology and show how it began as information-relative, with different modalities (e.g. logical, physical, practical) distinguished in terms of respective ‘designated states of information’, and shifted later in his life towards a more robust realism founded in direct perception of ideas in their relations. We then turn to Peirce’s formal logic, focusing on his diagrammatic system of Existential Graphs where he did his most serious logical research. Finally we discuss Peirce’s modal metaphysics and its implications for determinism and realism about universals. (shrink)

This book defends a radical new theory of contingency as a physical phenomenon. Drawing on the many-worlds approach to quantum theory and cutting-edge metaphysics and philosophy of science, it argues that quantum theories are best understood as telling us about the space of genuine possibilities, rather than as telling us solely about actuality. When quantum physics is taken seriously in the way first proposed by Hugh Everett III, it provides the resources for a new systematic metaphysical framework encompassing possibility, (...) necessity, actuality, chance, counterfactuals, and a host of related modal notions. -/- Rationalist metaphysicians argue that the metaphysics of modality is strictly prior to any scientific investigation; metaphysics establishes which worlds are possible, and physics merely checks which of these worlds is actual. Naturalistic metaphysicians respond that science may discover new possibilities and new impossibilities. This book's quantum theory of contingency takes naturalistic metaphysics one step further, allowing that science may discover what it is to be possible. As electromagnetism revealed the nature of light, as acoustics revealed the nature of sound, as statistical mechanics revealed the nature of heat, so quantum physics reveals the nature of contingency. (shrink)

This study underscores The Lily and the Bird's response to despair in The Sickness unto Death. By suggesting in The Lily and the Bird that we look to nature's creatures to learn an attunement and responsiveness to our situation as physical creatures subject to finite constraints, Kierkegaard's text comes into dialogue with a form of misalignment portrayed in The Sickness unto Death as a refusal of the given, “the finite,” and “the necessary.” One way of seeking alignment in The (...) Lily and the Bird entails learning to hear and to answer within one's given environment, opening up the possibility of embodied joy. (shrink)