Without a doubt, one of the main reasons Platonsim remains such a strong contender in the Foundations of Mathematics debate is because of the prima facie plausibility of the claim that objectivity needs objects. It seems like nothing else but the existence of external referents for the terms of our mathematical theories and calculations can guarantee the objectivity of our mathematical knowledge. The reason why Frege – and most Platonists ever since – could not adhere to the idea that mathematical (...) objects were mental, conventional or in any other way dependent on our faculties, will or other historical contingencies was that objects whose properties of existence depended on such contingencies could not warrant the objectivity required for scientific knowledge. This idea gained currency in the second half of the 19th Century and remains current for the most part today. However, it was not always like that. Objectivity, after all, has a history, and according to its historians (Daston 2001), the view that scientific knowledge need be objective is a fairly recent one. Up until mid-19th Century, science was not so much concerned with objectivity, as it was concerned with truth. Before the rise of the modern university and the professional scientist, science had the discovery of truths as its ultimate goal. In contrast, modern science now aims at the production and acquisition of objective knowledge. The difference might seem.. (shrink)

The 20 sup > th /sup > century has been a tumultuous time in psychology -- a century in which the discipline struggled with basic questions about its intellectual identity, but nonetheless managed to achieve spectacular growth and maturation. It’s not surprising, then, that psychology has attracted sustained philosophical attention and stimulated rich philosophical debate. Some of this debate was aimed at understanding, and sometimes criticizing, the assumptions, concepts and explanatory strategies prevailing in the psychology of the time. But much (...) philosophical work has also been devoted to exploring the implications of psychological findings and theories for broader philosophical questions like: Are humans really rational animals? How malleable is human nature? and Do we have any innate knowledge or innate ideas? One particularly noteworthy fact about philosophy of psychology in the 20 sup > th /sup > century is that, in the last quarter of the century, the distinction between psychology and the philosophy of psychology began to dissolve as philosophers played an increasingly active role in articulating and testing empirical theories about the mind and psychologists became increasingly interested in the philosophical underpinnings and implications of their work. Our survey is divided into five sections, each focusing on an important theme in 20 sup > th /sup > century psychology which has been the focus of philosophical attention and has benefited from philosophical scrutiny. (shrink)

Bayesian Epistemology is a general framework for thinking about agents who have beliefs that come in degrees. Theories in this framework give accounts of rational belief and rational belief change, which share two key features: (i) rational belief states are represented with probability functions, and (ii) rational belief change results from the acquisition of evidence. This dissertation focuses specifically on the second feature. I pose the Evidence Question: What is it to have evidence? Before addressing this question we must have (...) an understanding of Bayesian Epistemology. The first chapter argues that we should understand Bayesian Epistemology as giving us theories that are evaluative and not action-guiding. I reach this verdict after considering the popular ‘ought’-implies-‘can’ objection to Bayesian Epistemology. The second chapter argues that it is important for theories in Bayesian Epistemology to answer the Evidence Question, and distinguishes between internalist and externalist answers. The third and fourth chapters present and defend a specific answer to the Evidence Question. The account is inspired by reliabilist accounts of justification, and attempts to understand what it is to have evidence by appealing solely to considerations of reliability. Chapter 3 explains how to understand reliability, and how the account fits with Bayesian Epistemology, in particular, the requirement that an agent’s evidence receive probability 1. Chapter 4 responds to objections, which maintain that the account gives the wrong verdict in a variety of situations including skeptical scenarios, lottery cases, scientific cases, and cases involving inference. After slight modifications, I argue that my account has the resources to answer the objections. The fifth chapter considers the possibility of losing evidence. I show how my account can model these cases. To do so, however, we require a modification to Conditionalization, the orthodox principle governing belief change. I present such a modification. The sixth and seventh chapters propose a new understanding of Dutch Book Arguments, historically important arguments for Bayesian principles. The proposal shows that the Dutch Book Arguments for implausible principles are defective, while the ones for plausible principles are not. The final chapter is a conclusion. (shrink)

David Lewis famously proposed to model conventions as solutions to coordination games, where equilibrium selection is driven by precedence, or the history of play. A characteristic feature of Lewis Conventions is that they are intrinsically nonnormative. Some philosophers have argued that for this reason they miss a crucial aspect of our folk notion of convention. It is doubtful however that Lewis was merely analysing a folk concept. I illustrate how his theory can (and must) be assessed using empirical data, and (...) argue that it does indeed miss some important aspects of real-world conventions. I conclude that whether Lewis Conventions exist or not depends on how closely they approximate real-world behaviour, and whether we have any alternative theory that does a better job at explaining the phenomena. (shrink)

In this paper, I develop two criticisms of L. Jonathan Cohen's influential a priori argument that human irrationality cannot be experimentally demonstrated. The first is that the argument depends crucially on the concept of a normal human but that no such concept suitable for Cohen's purposes is available. The second is that even if his argument were granted, his thesis of an unimpeachable human capacity for reasoning is not a defense of human reasoning, but rather amounts to the claim that (...) we cannot make any meaningful evaluative claims about human reasoning whatsoever. (shrink)

This chapter sets out a theory of how to weigh alethic and pragmatic (non-alethic) reasons for belief, or more precisely, to say how alethic and non-alethic considerations jointly determine what one ought to believe. It replaces my earlier (2008) weighing account. It is part of _The true and the good: a new theory of theoretical reason_, which develops a view, welfarist pluralism, which comprises central two theses. One is that there are both irreducibly alethic or epistemic reasons for belief and (...) irreducibly pragmatic (and non-alethic) reasons for belief. The other is that despite this, the source of all normativity is pragmatic in a particular way, i.e. that all reasons are reasons in virtue of their being conducive to wellbeing. The pluralist theory of reasons emerges from the irreducibly plural nature of the components of wellbeing, on of which is being in a positively-valenced epistemic state. This view also offers some insight into outstanding problems concerning the scope, chronicity, and normativity of the requirements of theoretical rationality as well. (Updated 10 May 2022). (shrink)

This paper focuses on two interrelated issues about the prospects for research projects in experimental philosophical logic. The first issue is about the role that logic plays in such projects; the second involves the role that experimental results from the cognitive sciences play in them. I argue that some notion of logic plays a crucial role in these research projects, and, in turn, the results of these projects might inform substantive debates in the philosophy of logic.

How ought we to go about forming and revising our beliefs, arguing and debating our reasons, and investigating our world? If those questions constitute normative epistemology, then I am interested here in normative metaepistemology: the investigation into how we ought to go about forming and revising our beliefs about how we ought to go about forming and revising our beliefs -- how we ought to argue about how we ought to argue. Such investigations have become urgent of late, for the (...) methodology of epistemology has reached something of a crisis. For analytic epistemology of the last half-century has relied overwhelmingly on intuitions,1 and a growing set of arguments and data has begun to call this reliance on intuition seriously into question (e.g., Weinberg, Nichols, and Stich 2001; Nichols, Stich, and Weinberg 2003; Cummins 1998). Although that method has not been entirely without defenders (BonJour 1998; Bealer 1996; Jackson 1998; Sosa forthcoming; Weatherson 2003), these defenses have not generally risen to the specific challenges leveled by the anti-intuitionist critics. In particular, the critics have attacked specific ways of deploying intuitions, and the defenders have overwhelmingly responded with in-principle defenses of the cogency of appealing to intuition. An analogy here would be someone’s responding to arguments alleging systematic.. (shrink)

Tradition compels me to write dissertation acknowledgements that are long, effusive, and unprofessional. Fortunately for me, I heartily endorse that tradition.

This paper tries to say in what sense truth is a norm, a thesis that Donald Davidson, whose view are examined, denies. After skteching his conception of rationality, it is argued that truth is a norm in only the sense that we ought to believe what we believe is true, not that we all to believe everything which is true. This minimal norm of truth is isolated and defended.

Interpreting John Rawls’ ‘reflective equilibrium’ method from the perspective of Morton White’s holistic pragmatism entails both an epistemological and a methodological dimension. In this article, I reconsider White’s perspective regarding Rawls’ ‘reflective equilibrium’. This requires a critical examination of the method’s origins and development, with an emphasis on Nelson Goodman’s process of justification and the Duhem-Quine thesis. In order to examine the origins and development of the ‘reflective equilibrium’ method, I also draw upon the writings of Pierre Duhem, Willard Van (...) Orman Quine, Nelson Goodman, Stephen P. Stich and Donald Gillies, among others. Subsequently, I interpret the criticisms that have been formulated against the process of justification elaborated by Goodman and adapted by Rawls. Afterwards, I explain the conceptual links between the ‘Duhem-Quine thesis’ and the ‘reflective equilibrium’ method. In the last chapter, I analyse White’s assertion that Rawls’ theory of justice is a variant of holistic pragmatism. I emphasize how White’s holistic theses coincide to a significant extent with the ideas devised by Rawls regarding the method of ‘reflective equilibrium’ in social justice, and in a more general sense, in ethics. Also, I expound why White’s doctrine is epistemologically holistic and methodologically monistic. (shrink)

There are two chief tasks which confront the philosophy of scientific method. The first task is to specify the methodology which serves as the objective ground for scientific theory appraisal and acceptance. The second task is to explain how application of this methodology leads to advance toward the aim(s) of science. In other words, the goal of the theory of method is to provide an integrated explanation of both rational scientific theory choice and scientific progress.

A large portion of philosophy done in the Western analytic tradition attempts to provide conceptual analyses which are tested by examples that elicit intuitions. These intuitions are, in turn, used as evidence either for or against a given analysis. In recent years, there has been much discussion of the uses of intuitions from empirically minded philosophers and psychologists. The basic strategy is to discover empirically how “normal” folks think about certain topics in philosophy. This application of folk intuitions to philosophy (...) branches into roughly two basic approaches. The first is an attempt to show that in given domains, folk intuitions are not very reliable sources of evidence; hence, we have good reason to think that philosophers' intuitions are also not reliable sources of evidence in that domain. The second approach attempts to determine what folk concepts are. Once folk concepts are analyzed, they are then argued to be relevant to philosophical debates. My guiding question for this dissertation is the following one: Why should philosophers care about folk intuitions? One answer is that we should want some philosophical analyses to be grounded in everyday concepts. I argue that there are presently no adequate a priori arguments for the reliability of philosophical intuitions in some philosophically relevant areas. Whether intuitions are reliable enough to ground philosophical analyses is an empirical question. I review four domains where ordinary concepts have been argued to ground philosophical theorizing: (1) epistemology, (2) ethics, (3) free will, and (4) action theory. I argue that the available evidence suggests that we should be skeptical of intuitions in philosophy—but that skepticism does not entail radical skepticism. That is, the empirical studies reveal a wide variety of results which on the surface indicate that intuitions are not reliable (e.g., order effects or framing effects). However, I argue that these seeming instabilities are actually the results of stable differences in different groups of people. Hence, I argue that intuitions are stable in a surprising way—that different groups of people have stable intuitions. This intuition stability, while not the kind of monolithic stability many philosophers might desire, is argued to be sufficient to ground philosophical analyses in these domains. (shrink)

This addendum presents results that confound some commonly made claims about the sorts of environments in which the performance of TTB exceeds that of Franklin's rule, and vice versa.

in American Philosophical Quarterly 44 (3), July 2007, pp. 259-72. Argues that epistemically normative claims are made true by the same facts as, but do not mean the same as, certain natural-sounding claims.

Among the tools the epistemologist brings to the table ought to be, I suggest, a firm understanding of the imagination--one that is informed by philosophy of mind, cognitive psychology, and neuroscience. In my dissertation, I highlight several ways in which such an understanding of the imagination can yield insight into traditional questions in epistemology. My dissertation falls into three parts. In Part I, I argue that dreaming should be understood in imaginative terms, and that this has important implications for questions (...) about dream skepticism. In Part II, I argue that an understanding of the imagination is important for understanding important parts of philosophical methodology--particularly those involving thought experiments. I mean in Part II to be vindicating a great deal of traditional methodology. In Part III, I explore what I take to be a number of deep connections between knowledge and counterfactuals. I defend a form of contextualism in each domain, and argue that inference among imaginings, with its important structural similarities to inference in belief, plays a central role in the epistemology of counterfactuals. (shrink)

The dissertation criticizes two analogical applications of Darwinism to the spheres of mind and culture: the Darwinian approach to creativity and memetics. These theories rely on three basic analogies: the ontological analogy states that the basic ontological units of culture are so-called memes, which are replicators like genes; the origination analogy states that novelty in human creativity emerges in a "blind" Darwinian manner; and the explanatory units of selection analogy states that memes are "egoistic" and that they can spread independently (...) of our mind. The detailed philosophical analysis offered in the dissertation shows that these three analogies rely on either wrong or trivial statements: they provide either wrong or no new descriptions or explanations of the phenomena at hand. In Chapter One, I introduce the diverse ways, in which contemporary Darwinism is used today outside of evolutionary biology. Chapter Two explains what it means to claim that something evolves in a Darwinian manner. Chapter Three to Five address each of the three analogies separately. Darwinism applied to culture and mind, at least in the way discussed in this study, is not a dangerous idea. It leads either to wrong claims or to a re-telling in Darwinian terms of what we have already known. (shrink)

Throughout the 20th century, an enormous amount of intellectual fuel was spent debating the merits of a class of skeptical arguments which purport to show that knowledge of the external world is not possible. These arguments, whose origins can be traced back to Descartes, played an important role in the work of some of the leading philosophers of the 20th century, including Russell, Moore and Wittgenstein, and they continue to engage the interest of contemporary philosophers. (e.g., Cohen 1999, DeRose 1995, (...) Hill 1996, Klein 1981, Lewis 1996, McGinn 1993, Nozick 1981, Schiffer 1996, Unger 1975, Williams 1996) Typically, these arguments make use of one or more premises which the philosophers proposing them take to be intuitively obvious. Beyond an appeal to intuition, little or no defense is offered, and in many cases it is hard to see what else could be said in support of these premises. A number of authors have suggested that the intuitions undergirding these skeptical arguments are universal – shared by everyone (or almost everyone) who thinks reflectively about knowledge. In this paper we will offer some evidence indicating that they are far from universal. Rather, the evidence suggests that many of the intuitions epistemologists invoke vary with the cultural background, socioeconomic status and educational background of the person offering the intuition. And this, we will argue, is bad news for the skeptical arguments that rely on those intuitions. The evidence may also be bad news for skepticism itself – not because it shows that skepticism is false, but rather because, if we accept one prominent account of the link between epistemic intuitions and epistemic concepts, it indicates that skepticism may be much less interesting and much less worrisome than philosophers have taken it to be. (shrink)

Over the past few decades, reasoning and rationality have been the focus of enormous interdisciplinary attention, attracting interest from philosophers, psychologists, economists, statisticians and anthropologists, among others. The widespread interest in the topic reflects the central status of reasoning in human affairs. But it also suggests that there are many different though related projects and tasks which need to be addressed if we are to attain a comprehensive understanding of reasoning.

Traditional philosophy has been under attack from several quarters in recent years. The traditional philosopher views philosophy as an armchair discipline relying, for the most part, on reason and reflection. Some philosophers doubt the legitimacy of this type of inquiry. Their arguments usually occur along two dimensions. Some argue that the primary data source for the armchair philosopher--intuition--does not provide evidence for philosophical theories. Others argue that conceptual analysis, which is the preferred method of inquiry for armchair philosophers, can't yield (...) the results the philosopher is looking for, since concepts like 'knowledge' or 'free-will' vary from culture to culture or even between persons within a culture. Finally, some philosophers argue that we should abandon the armchair program because philosophy should be an empirical enterprise continuous with the sciences. I argue that attempts to undermine intuition fail and that one can justify the evidential status of intuition in a non-question begging way. I then argue that attacks on the belief in shared concepts do not succeed because they often conflate the nature of scientific objects with those of interest to the philosopher. However, if concepts do vary from culture to culture, I show that the philosopher need not abandon the armchair. She can still do conceptual analysis but it will be only the entry point into the philosophical dialogue. I apply this approach to epistemology arguing that the central epistemic questions ought to be the existential and the normative. This approach helps to vindicate epistemic internalism. (shrink)

¿La ciencia otorga conocimiento de la realidad? En este artículo ofrezco una respuesta positiva a esta pregunta. Rechazo la pretensión anti-realista según la cual somos incapaces de adquirir conocimiento de la realidad; al contrario, apoyo la visión realista que afirma que la ciencia produce conocimiento del mundo externo. Pero: ¿cuál mundo es ese? Algunos sostienen que la ciencia conduce a la superación de nuestra visión del mundo dada por el sentido común. El sentido común es la “metafísica de la edad (...) de piedra” que debe rechazarse como la teoría falsa de nuestros primitivos ancestros. Contra tales eliminativistas acerca del sentido común, planteo que la ciencia conserva y explica la experiencia del mundo dada por el sentido común. Aunque la ciencia puede llevar a la superación de creencias profundamente arraigadas, el sentido común refleja un nivel de experiencia más básico y duradero. Las creencias del sentido común son creencias bien confirmadas que se justifican por su papel en la acción práctica exitosa de la vida diaria. El sentido común otorga una base sólida sobre la cual establecer el enfoque realista a la ciencia. -/- . (shrink)

Does science provide knowledge of reality? In this paper, I offer a positive response to this question. I reject the anti-realist claim that we are unable to acquire knowledge of reality in favour of the realist view that science yields knowledge of the external world. But what world is that? Some argue that science leads to the overthrow of our commonsense view of the world. Common sense is “stone-age metaphysics” to be rejected as the false theory of our primitive ancestors. (...) Against such eliminativists about common sense, I argue that science both preserves and explains commonsense experience of the world. Though science may lead to the overthrow of deeply held beliefs, common sense reflects a more basic and durable level of experience. Commonsense beliefs are well-confirmed beliefs which are vindicated by their role in successful practical action each and every day. Common sense provides a firm basis on which to establish the realist approach to science. (shrink)

A discussion of L.A. Paul's 'Transformative Experience' from an Author Meets Critics session at the 2015 Pacific APA.

This paper presents a new argument for the Principle of Indifference. This argument can be thought of in two ways: as a pragmatic argument, justifying the principle as needing to hold if one is to minimise worst-case expected loss, or as an epistemic argument, justifying the principle as needing to hold in order to minimise worst-case expected inaccuracy. The question arises as to which interpretation is preferable. I show that the epistemic argument contradicts Evidentialism and suggest that the relative plausibility (...) of Evidentialism provides grounds to prefer the pragmatic interpretation. If this is right, it extends to a general preference for pragmatic arguments for the Principle of Indifference, and also to a general preference for pragmatic arguments for other norms of Bayesian epistemology. (shrink)

Stephen Stich has criticized the possibility of providing a legitimate set of norms for reasoning, since such norms are justified via reference to pretheoretical intuitions. I argue that through a process of perspicuously mapping the belief sphere one can generate a list of intellectual virtues that instrumentally lead to true beliefs. Hence, one does not have to rely on intuitions since the norms of reason are derived from factual claims about the intellectually virtuous agent.

In her 1997 OSSA paper, Trudy Govier discusses in detail my thesis that arguers have dialectical obligations. In a 1998 paper she further examines this thesis to see whether it is viable and concludes that it faces serious problems. In this paper, I assess the state of the thesis in light of Govier's discussion of it. I urge that we have something to gain from the empirical turn--from investigating best practices. At the end, I take a step back to ask (...) what is really at issue here and how it connect s to other issues in the theory of argument. (shrink)

A simple way to approach fallacies is to ask, "Has reasoning-strategy X retarded or halted the growth of knowledge?" and seek uncontroversial historical events as empirical support for the fallacy moniker. Historical support also offers a means of retiring reasoning strategies heretofore thought fallacious—they are wrongly accused if they helped drive knowledge. Finally, this approach allows us to be more critical of our argumentative practices. Evidence is offered for an Intuitive Fallacy: In its extreme form it rules out the possibility (...) of evidence; in its weaker form, it is a non-response to evidence that appears to be a response. (shrink)