We use data collected among Hadza hunter-gatherers between 2005 and 2009 to examine hypotheses about the causes and consequences of men’s foraging and food sharing. We find that Hadza men foraged for a range of food types, including fruit, honey, small animals, and large game. Large game were shared not like common goods, but in ways that significantly advantaged producers’ households. Food sharing and consumption data show that men channeled the foods they produced to their wives, children, and their consanguineal (...) and affinal kin living in other households. On average, single men brought food to camp on 28% of days, married men without children at home on 31% of days, and married men with children at home on 42% of days. Married men brought fruit, the least widely shared resource, to camp significantly more often than single men. A model of the relationship between hunting success and household food consumption indicates that the best hunters provided 3–4 times the amount of food to their families than median or poor hunters. These new data fill important gaps in our knowledge of the subsistence economy of the Hadza and uphold predictions derived from the household and kin provisioning hypotheses. Key evidence and assumptions backing prior claims that Hadza hunting is largely a form of status competition were not replicated in our study. In light of this, family provisioning is a more viable explanation for why good hunters are preferred as husbands and have higher fertility than others. (shrink)

Frank Hindriks has attempted to derive a variant of Timothy Williamson’s knowledge rule for assertion on the basis of a more fundamental belief expression analysis of that speech act. I show that his attempted derivation involves a crucial equivocation between two senses of ‘must,’ and therefore fails. I suggest two possible repairs; but I argue that even if they are successful, we should prefer Williamson’s fully general knowledge rule to Hindriks’s restricted moral norm.

The question of the nature of free will remains a perennial challenge for philosophy. The French philosopher Henri Bergson was one who sought to address this challenge. He argued that traditional conceptions of the free-will debate would not suffice. He suggested that both determinist and libertarian accounts fall foul of spatializing tendencies. Bergson's first major work, Time and Free Will, sought to ground his understanding of freedom, in contrast to traditional understandings, in the concept of duration. Bergson, however, actively resisted (...) attempts to define clearly freedom, which he believed ultimately leads to a spatializing of freedom. By attending to Bergson's concept of duration in Time and Free Will, and how this concept relates to freedom, it becomes possible to articulate a positive conception of freedom. This becomes important when arguing for the validity of Bergson's ideas in the current climate. Thus, a positive conception of freedom for Bergson can be “defined” as “the creation of the new within the flow of duration.” It is, however, not something that can be defined, but is something that can be located. (shrink)

Recent theories of agency (sees to it that) of Nuel Belnap and Michael Perloff are examined, particularly in the context of an early proposal of the author.

This thesis is about toleration as a modality of citizenship for pluralistic societies. Its central argument is that the current dissatisfaction with "mere" toleration which we find so broadly represented in our public and scholarly cultures is based on an underestimation of the capacities and attitudes that toleration entails. The liberal recasting of toleration, sophisticated and indeed invaluable though it is abets this devaluation by focusing too exclusively on public justification and on the Lockean stream of the tradition from which (...) we draw. ;The present thesis begins by tracing some of the difficulties facing the Rawlsian and Habermasian projects if we accept a vivid picture of the pluralisms amidst which we live. It then sketches the central features of a complementary tradition of toleration as it flows to us through the works of Montaigne, William James, Mikhail Bakhtin and others. An attempt is made to show where the resources drawn from this tradition might fit in to a theory of citizenship given reasonable Rawlsian qualms about "thick" public conceptions and given the fissiparous nature of a civil society like ours. The thesis ends with a pair of empirically oriented chapters which show ways in which we could conceive a praxis of toleration which might respond to the issues raised in the earlier sections of the work. (shrink)

Early Renaissance naturalists worked to identify the plans described in ancient sources. But during the middle decades of the sixteenth century, naturalists instead began to describe and name plans unknown to the ancients. They also divided nature much more finely, distinguishing species that their predecessors had lumped together. As a result, they created an information overload. Dictionaries of synonyms and local flora were invented in the early seventeenth century as partial solutions to this problem of information overload.

Time travel is a solved problem. Einstein showed that if you travel in a spaceship for months at speeds close to the speed of light, you can return to earth centuries in the future.

There are two views of the essences of speech acts: according to one view, they are natural kinds; according to the other, they are what I call normative kinds—kinds in the (possibly non-reductive) definition of which some normative term occurs. In this article I show that speech acts can be normative but also natural kinds by deriving Williamson's account of assertion, on which it is an act individuated, and constitutively governed, by a norm (the knowledge rule), from a consideration of (...) the natural characteristics of normal cases of its performance. (shrink)

For a long time before the ‘climategate’ emails scandal of late 2009 which cast doubt on the propriety of science underpinning the Intergovernmental Panel on Climate Change (IPCC), attention to climate change science and policy has focused solely upon the truth or falsity of the proposition that human behaviour is responsible for serious global risks from anthropogenic climate change. This article places such propositional concerns in the perspective of a different understanding of the relationships between scientific knowledge and public policy (...) issues from the conventional ‘translation’ model, in which prior scientific research and understanding is communicated and translated into corresponding policies — or not, if it remains disputed and overly uncertain. Explaining some of the key contingencies and bases for uncertainty in IPCC climate projections and human influences, I show how social and technical analysis of climate science is not about denial of the scientific propositional claims at issue, but about understanding the conditional and essentially ambiguous epistemic character of any such knowledge, however technically sophisticated and robust it may be. Contrary to conventional wisdom, it is entirely plausible that existing scientific representations of climate change and its human causes may understate the risks induced by prevailing social-economic processes rather than exaggerate them. As the article shows, the public meanings given to climate science, and to ‘the climate problem’, and thus also the public culture which that knowledge is supposed to inform, are themselves already in key respects presumed and (attemptedly) imposed by the science and its framing. This gives rise to perverse effects on public readiness to take informed democratic responsibility for ‘the global climate problem’, and associated cross-cutting issues which existing scientific framings of public policy erase from view. (shrink)

Since its publication in 1965, Brian Barry's seminal work has occupied an important role in the revival of Anglo-American political philosophy. A number of ideas and terms in it have become part of the standard vocabulary, such as the distinction between "ideal-regarding" and "want-regarding" principles and the division of principles into aggregative and distributive. The book provided the first precise analysis of the concept of political values having trade-off relations and its analysis of the notion of the public interest (...) has also been significant. (shrink)

A philosophical analysis of the discourses, practices, and effects of representation in political institutions, focusing on American democracy.

Andrew Webster proposes that science and technology studies align itself more thoroughly with practical policy contexts, actors and issues, so as to become more useful, and thus more a regular actor in such worlds. This commentary raises some questions about this approach. First, I note that manifest influence in science or policy or both should not become-by default, or deliberately-a criterion of intellectual quality for STS research work. I distinguish between reflective historical work, which delineates the contingent ways in which (...) existing policy and technoscientific cultures have become entrenched as such inscribed and perhaps dysfunctional institutional habit; and, work of the kind that Webster's three case studies exemplify, that is, geared to influence policy-decision outcomes. I suggest that many of the important issues facing STS-and "policy"-are not explicit "policy-decision issues" as such, but implicit "policy syndromes" that need naming, diagnosing and open, if enforced, institutional reflection. (shrink)

In this paper I argue that John Dewey developed a philosophy of law that follows directly from his conception of democracy. Indeed, under Dewey’s theory an understanding of law can only follow from an accurate understanding of the social and political context within which it functions. This has important implications for the form law takes within democ- ratic society. The paper will explore these implications through a comparison of Dewey’s claims with those of Richard Posner and Ronald Dworkin; two other (...) theorists that inti- mately link law and democracy. After outlining their theories I will use the recent United States Supreme Court case, Citizens United, to discuss how practitioners of the three theo- ries would decide a case that implicates both the rule of law and democratic procedures. In order to do this judges following each theory, “Dews, Dworks and Poses,” are imagined. Ul- timately this paper will show that drastically different results to Citizens United would fol- low. The (tentative) conclusion of the paper is that Dewey’s conception of the relationship between democracy and law is a superior option to either that of Dworkin or Posner. (shrink)

The structure of Reichenbach's pragmatic vindication of induction is analysed in detail. The argument is seen to proceed in two stages, the first being a pragmatic justification of the frequency interpretation of probability which is taken as a license for considering the aim of induction to be the discovery of limiting relative frequencies, and the second being the pragmatic justification of induction itself. Both justifications are found to contain flaws, and the arguments used to support Reichenbach's definition of the aim (...) of induction presuppose the availability of a type of predicate which generates paradoxes closely related to Goodman's "grue-bleen" paradox. Next, Salmon's "Criterion of Linguistic Invariance" is evaluated as a canon of inductive logic, which singles out the "straight rule" from an infinite class of convergent inductive rules. Upon close examination, its credentials are seen to be unimpressive. In connection with Salmon's work on linguistic invariance, we take a closer look at the impact of the Goodman paradox on probability estimator rules like Reichenbach's "straight rule." We find that its undesirable consequences for such systems of inductive logic cannot be escaped by Salmon's solution, or indeed by any solution whose motivating idea is to rule "queer" predicates out of court. Finally, the discussion of the Goodman paradox leads us to a modest methodological proposal for systems of inductive logic which incorperate probability estimator rules of the type at issue. (shrink)

Harvey Siegel's (1985) attempts to revive the traditional epistemological formulation of the rationality of science. Contending that "a general commitment to evidence" is constitutive of method and rationality in science, Siegel advances its compatibility with specific, historically attuned formulations of principles of evidential support as a virtue of his aprioristic candidate for science's rationality. In point of fact, this account is compatible with virtually any formulation of evidential support, which runs afoul of Siegel's claim that scientific beliefs must be evaluated (...) with respect to their rationality. The unwelcome consequence of Siegel's view is that most any belief, scientific or pseudoscientific, can be defended as rational. Indeed, if we want to furnish a warrant for rational choice, we must turn to the very historically informed principles of evidential support that are dismissed by Siegel as providing a misleading portrait of science's rationality. (shrink)

This paper explores the role of divine speaking in Christian ethics, critically engaging with the tendency in modern evangelicalism to seek to derive moral principles from Scripture or a biblically-derived ontology, often via deployment of map-making metaphors. The paper sets out the rather different centrality of the divine claim found in biblical accounts of good or righteous human action. Drawing on the criticisms of the anthropologist Tim Ingold of what he calls the “map-making fallacy,” the paper concludes by suggesting the (...) methodological importance of understanding the orientation of the Christian life to be a fundamentally grounded in interpersonal responsivity. (shrink)

To paraphrase Lewis Carroll’s poem “The Walrus and the Carpenter” from his Through the Looking Glass, “The time has come to talk of many things.” Not as the Walrus did in the nursery rhyme, “of sho...

This is an attempt to rehabilitate W. K. Clifford’s long-rejected position that “it is [morally] wrong, always, everywhere, and for anyone, to believe anything on insufficient evidence.” I supplement Clifford’s own argument with two others. They are all valid. I argue for the truth of their premises. The premises in the arguments I use to supplement Clifford’s own are that we cannot believe purely at will; that we must choose among Cliffordianism, some other rule, and doxastic amoralism; that all other (...) rules are self-subverting in that they can be used effectively at most once; and that a policy of doxastic amoralism has worse results overall than adherence to Cliffordianism. The upshot is that Cliffordianism is an irreducible analogue of rule utilitarianism. I look at some objections to Cliffordianism. I argue that none has merit. I point out that Cliffordianism provides something of a justification for legal freedom of conscience. (shrink)

Wavefunction collapse models modify Schrödinger's equation so that it describes the rapid evolution of a superposition of macroscopically distinguishable states to one of them. This provides a phenomenological basis for a physical resolution to the so-called “measurement problem.” Such models have experimentally testable differences from standard quantum theory. The most well developed such model at present is the Continuous Spontaneous Localization (CSL) model in which a universal fluctuating classical field interacts with particles to cause collapse. One “side effect” of this (...) interaction is that the field imparts energy to the particles: experimental evidence on this has led to restrictions on the parameters of the model, suggesting that the coupling of the classical field to the particles must be mass-proportional. Another “side effect” is that the field imparts momentum to particles, causing a small blob of matter to undergo random walk. Here we explore this in order to supply predictions which could be experimentally tested. We examine the translational diffusion of a sphere and a disc, and the rotational diffusion of a disc, according to CSL. For example, we find that the rms distance an isolated 10−5 cm radius sphere diffuses is ≈(its diameter, 5 cm) in (20 sec, a day), and that a disc of radius 2 ⋅ 10−5 cm and thickness 0.5 ⋅ 10−5 cm diffuses through 2πrad in about 70 sec (this assumes the “standard” CSL parameter values). The comparable rms diffusions of standard quantum theory are smaller than these by a factor 10−3±1. It is shown that the CSL diffusion in air at STP is much reduced and, indeed, is swamped by the ordinary Brownian motion. It is also shown that the sphere's diffusion in a thermal radiation bath at room temperature is comparable to the CSL diffusion, but is utterly negligible at liquid He temperature. Thus, in order to observe CSL diffusion, the pressure and temperature must be low. At the low reported pressure of 5 ⋅ 10−17 Torr, achieved at 4.2°K, the mean time between air molecule collisions with the (sphere, disc) is ≈(80, 45)min. This is ample time for observation of the putative CSL diffusion with the standard parameters and, it is pointed out, with any parameters in the range over which the theory may be considered viable. This encourages consideration of how such an experiment may actually be performed, and the paper closes with some thoughts on this subject. (shrink)

The three main approaches to the metaphysics of intentionality can arguably be subjected to analysis in terms of grammatical point of view: the approach of the (internalist) phenomenal intentionality programme (plus productivism about linguistic content) may be regarded as first-personal; interpretationism, perhaps, as second-personal; and (reductive externalist) causal information theories (including teleosemantics) as third-personal. After making this plausible, the current paper focusses on the role of the interpreter (if any) in interpretationism. It argues that, despite some considerations from the publicity (...) of meaning potentially suggesting the contrary, radical interpretation is not subject to epistemic constraint; nor should the interpretationist appeal to the idiosyncratic interests of actual interpreters, thereby rendering the approach irremediably relativistic. Instead, an appeal to the pure form of interestedness is all that is involved; this supports a methodologically non-reductive outlook on intentionality. (shrink)