The Human A Priori is a collection of essays by A. W. Moore, one of them previously unpublished and the rest all revised. These essays are all concerned, more or less directly, with something ineliminably anthropocentric in our systematic pursuit of a priori sense-making. Part I deals with the nature, scope, and limits of a priori sense-making in general. Parts II, III, and IV deal with what are often thought to be the three great exemplars of the (...) systematic pursuit of such sense-making: philosophy in the case of Part II, ethics in the case of Part III, and mathematics in the case of Part IV. Much of the attention throughout is devoted to the work of other philosophers: Kant and Wittgenstein feature prominently, and five of the essays take the form of reviews or critical notices of recent work in philosophy. But the interest in never purely exegetical. One of the lessons that emerges from the essays, either in opposition to the views of these other philosophers or by invocation of their views, is that we humans achieve nothing of real significance in philosophy, ethics, or mathematics except from a human point of view, and hence that all three of these pursuits can be said to betoken what may reasonably be called 'the human a priori'. (shrink)

In this article I investigate a neglected form of radical skepticism that questions whether any of our logical, mathematical and other seemingly self-evident beliefs count as knowledge. ‘A priori skepticism,’ as I will call it, challenges our ability to know any of the following sorts of propositions: (1.1) The sum of two and three is five. (1.2) Whatever is square is rectangular. (1.3) Whatever is red is colored. (1.4) No surface can be uniformly red and uniformly blue at (...) the same time. (1.5) If ‘if p then q’ is true and ‘p’ is true, then ‘q’ is true. (1.6) No statement can be both true and false at the same time and in the same respect. (1.7) If A is taller than B, and B is taller than C, then A is taller than C. (1.8) Everything is identical to itself. (1.9) If the conclusion of an inductive argument is contingent, it is possible for the premises of that argument to be true and its conclusion to be false. (1.10) George W. Bush could have been a plumber. (1.11) George W. Bush could not have been a prime number. (1.12) ‘2 + 3 = 5’ is necessarily true. (shrink)

With the discovery of consistent non-Euclidean geometries, the a priori status of Euclidean proof was radically undermined. In response, philosophers proposed two revisionary interpretations of the practice: some argued that Euclidean proof is a purely formal system of deductive logic; others suggested that Euclidean reasoning is empirical, employing concepts derived from experience. I argue that both interpretations fail to capture the true nature of our geometrical thought. Euclidean proof is not a system of pure logic, but one in which (...) our grasp of the content of geometrical concepts plays a central role; moreover, our grasp of this content is a priori. (shrink)

There are several epistemic distinctions among truths that I have argued for in this paper. First, there are those truths which holdof every rationally accessible conceptual scheme (class A truths). Second, there are those truths which holdin every rationally accessible conceptual scheme (class B truths). And finally, there are those truths whose truthvalue status isindependent of the empirical sciences (class C truths). The last category broadly includes statementsabout systems and the statements they contain, as well as statements true by virtue (...) of the rules of language itself.At the risk of anachronism, I'll describe the positions of Carnap (1956); Quine (1980); Grice et al. (1956); the various Putnam's and myself in terms of the above distinctions: both Carnap and Quine (pretty much) think there are no class A or class B truths. Both Putnam (1975) and Putnam (1983c) think there are class A and class B truths, and that these classes overlap. I deny there are class B truths but affirm the existence of class A truths (although I haven't given explicit examples of the latter here). Finally, everyone here but Quine (1980) thinks there are class C truths (of one sort or another). Putnam (1975) attempts to show that certain class C truths are simultaneously class A and class B truths. Grice et al. (1956) take pains to distinguish the claim that there are class C truths from the claim that there are class A truths, and claim (against Quine, 1980) that no argument showing there are no class A truths shows there are no class C truths.On my interpretation of Quine (1980) he thinks that the nonexistence of class A truths shows there are no class C truths-given the extra bit of argument that a notion of ‘true by convention’ or ‘true by virtue of meaning’ without epistemic content, is a distinction without significance. But that issue, which is the one Grice et al. (1956) are concerned with, has not been the focus in this paper-and so in a sense I have shifted the terms of the original debate.Here I have been primarily concerned to distinguish epistemic notions and sort out how and in what ways they relate to each other. A primary tool in this exercise has been the explicit recognition that formal models of truth make universality an unlikely property of our conceptual schemes. If I have not convinced anyone that the epistemic notions sort out the way I think they do, I hope at least that some burden-shifting has occurred: that philosophers do not either take it for granted that certain notionsmust be expressible in any conceptual scheme or treat the fact that conceptual schemes must be (in some sense) limited as of little (philosophical) moment.On the other hand, if I am right about the epistemology, it follows that previous attempts to mark out the necessary structures in rationally accessible conceptual schemes via a priori truths is hopeless. What I think must replace their role, what I call globally incorrigible sets of sentences, is a topic for another time. (shrink)

There are propositions that upon understanding them it seems that one can “just see” that they are necessary or impossible. A commonly discussed example is the claim that it is not possible for an object to be red and green all over at the same time. My purpose in this paper is to account for how it is that such beliefs are justified. I begin by criticizing a suggestion defended lately by Laurence BonJour and others. BonJour argues that because these (...) beliefs are necessarily true external factors are irrelevant to their epistemic status. This is how BonJour can defend a foundationalist account of the a priori while at the same time attacking foundationalism with respect to empirical knowledge. I argue that this view of the a priori is mistaken. External factors are relevant even in the case of those a priori beliefs it seems we can just see to be true. I defend an alternative account of the justification of such beliefs. I argue that these beliefs may be justified in virtue of their being the products of a basic belief-forming mechanism one has no reason to distrust. In particular, I argue that this approach can be employed to account for the non-inferential justification of a priori beliefs without falling prey to the line of objections BonJour lodges against other forms of foundationalism. (shrink)

This book answers three questions: (i) What is it for a statement to be analytically true? (ii) What is a priori knowledge? (How does it differ from inherited empirical knowledge? And how does it differ from acquired conceptual (non-empirical) knowledge, such as one's knowledge that not all continuous functions are differentiable?). (iii) Do we have a priori knowledge? It is shown that content-externalism is an 'epistemologicization' of the (logically, not psychologically) innocuous fact that, if a sentence S of (...) natural language expresses a multiply quantified generalization, S also expresses each quantified generalization obtained by permuting the quantifiers in it. It is also shown that, through judicious usage of Kaplan's dthat-operator, the shred of truth in content externalism can be reconciled with the datum that, in virtue of having a given representational content R, a mental state M has causal powers that it would not otherwise have. And it is thereby shown how to reconcile content-externalism, so far as the latter is true, with the legitimacy of individualist approaches to psychology. Finally, it is shown that content-externalism embodies a crude and false conception of the nature of the relationship between the literal meanings of linguistic expressions, on the one hand, and, on the other hand, the contents of the thoughts underlying our usage of such expressions. More precisely, content-externalism presupposes that literal meaning and cognitive content are in lockstep with each other; which, it is shown, is not the case and---what is also shown---only appears to be the case because of a failure on the part of semanticists to know where to draw the line between semantics and pragmatics. (shrink)

Alvin Goldman’s contributions to contemporary epistemology are impressive—few epistemologists have provided others so many occasions for reflecting on the fundamental character of their discipline and its concepts. His work has informed the way epistemological questions have changed (and remained consistent) over the last two decades. We (the authors of this paper) can perhaps best suggest our indebtedness by noting that there is probably no paper on epistemology that either of us individually or jointly have produced that does not in its (...) notes and references bear clear testimony to the influence of Professor Goldman’s arguments. The present paper is no exception (and this would be a particularly inapt place to break with our tradition of indebtedness). Professor Goldman has produced a series of discussions that we find particularly important for coming to terms with the venerable idea that there may be truths that can be known a priori (Goldman 1992a, 1992b, 1999). We do not altogether follow his lead, while he draws on the idea that a priori justification has something to do with innateness or processess, we prefer to accentuate the idea that a priori justification turns on a conceptually grounded truths and access via acquired conceptual competence (at least in many significant philosophical cases). Still, in developing our understanding we have been aided by much that Professor Goldman says regarding concepts, conceptual competence, and related psychological processes. The influences should become progressively clear, particularly in the later sections of this paper. What would it take for there to be a priori knowledge or justification? We can begin by reflecting on a widely agreed on answer to this question—one that purports to identify something that would at least be adequate for a priori justification. The answer will then serve as one anchor for the present investigation, a bit of shared ground on which empiricists and rationalists can, and typically do, agree.. (shrink)

One of Laurence BonJour’s main arguments for the existence of the a priori is an argument that a priori justification is indispensable for making inferences from experience to conclusions that go beyond experience. This argument has recently come under heavy fire from Albert Casullo, who has dubbed BonJour’s argument, “The Generality Argument.” In this paper I (i) defend the Generality Argument against Casullo’s criticisms, and (ii) develop a new, more plausible, version of the Generality Argument in response to (...) some other objections of my own. Two of these objections stem out of BonJour’s failing to fully consider the importance of the distinction between being justified in believing that an inference is good and being justified in making an inference. The final version of the argument that I develop sees the Generality Argument as one part of a cumulative case argument for the existence of a priori justification, rather than as a stand-alone knock-down argument. (shrink)

Journal of Philosophy of Education, EarlyView.

At the outset of this discussion, I undertook to present an argument from design which would follow Swinburne's example in making use of a priori judgments, while avoiding some of the objections which have been posed in response to his treatment of these issues. So we need to ask: how does this approach to the question of design compare with Swinburne's?Swinburne argues that a chaotic world is a priori more likely than an ordered world: this consideration provides one (...) central reason, on his account, for giving an explanation of some sort for the world's regularity. The other central argument he advances for this claim is the argument from analogy (in terms of the coins) which we noted earlier. The approach I have taken offers an alternative route to this same conclusion. In particular, it substitutes the simpler a priori judgments recorded in (i) and (ii) for the rather difficult and contentious claim that chaos is a priori more likely than order. In place of this claim, I have offered the judgment that order, or recurrence, is more likely given the activity of a common source or common kind of source than otherwise: this proposal does not commit us to a view either way on the question of whether order is a priori likely per se. Moreover, in place of Swinburne's analogical argument, I have offered an a priori approach, with the advantages I have noted.Given that recurrence is to be explained, we might ask: why offer an explanation in terms of design? On this point, Swinburne argues, for instance, that no other explanation of temporal regularity is even possible a priori. Again, the a priori principles which I have used, in (iv) and (v), may be less ambitious, but at the same time more persuasive. In support of this same idea, Swinburne also cites various ideas to do with the predictive power of the idea of design. I have tried to bring out the role of this sort of consideration in terms of my principle (v). Principle (iv) has no place in Swinburne's account, in view of his reliance on the principle of simplicity as a measure of prior probability.Lastly, we may ask: if we are to cite a designer, are there reasons for attributing to this agent more powers than are needed for the production of the effect to be explained? On this point, Swinburne cites the principle of simplicity. Again, my approach avoids what has proved to be a relatively controversial judgment about the nature of a priori probabilities, offering in place of the principle of simplicity the less ambitious principle recorded in (iii). At this point, I have moreover inverted the logical sequence of Swinburne's argument: it seems to me that, in the ways I have indicated, it is helpful to consider the extent of the powers of the source of recurrence before addressing the question of design.In these various ways, I hope I have made good my undertaking to present an argument which avoids some of the controversy surrounding the particular measures of a priori probability which figure in Swinburne's argument. Moreover, I hope that this approach provides an indication of how a priori judgments may function in a relatively unproblematic way within an argument from design, in so far as (i)–(v) are all rather modest proposals. In sum, the argument I have presented is distinguished by its explicit use of the a priori judgments recorded in (i)–(v), by its attempt to buttress in this fashion analogical forms of argument, and by the logical role it gives to the idea that the source of regularity possesses more powers than are required for the production of this effect.Lastly, we might ask: how persuasive is this argument? Of course, the cogency of the idea of design depends upon the balance of debate in other areas of the philosophy of religion, especially upon our ability to provide some account of the existence of evil. In this paper, I have been concerned to argue simply that recurrence by kind provides evidence for design: I have not addressed the question of whether other features of the world provide good evidence against the idea of (benevolent) design. However, if we confine our attention to this one phenomenon, there is it seems to me good evidence for the idea of design, (i) and (ii) suggest that recurrence surely calls for some explanation; (iii), together with the existence in nature of statistical irregularities, suggests that whatever provides this explanation could have brought about other effects besides; and design seems the only clear explanation of why this effect should have been brought about, if (as I have argued) analogies drawn from vegetable and animal reproduction fail, and if we cannot explain the effect satisfactorily by reference to the conditions of observation. Moreover, I have argued that there are reasons for supposing that the probability a priori of design is relatively high in relation to the probability a priori of any rival hypothesis of equivalent predictive power. In brief, this is because the design hypothesis (unlike the hypothesis of theism) can cite an agent of relatively indeterminate power in order to account for the phenomenon to be explained. In this regard, it is less ‘precisely defined’ than any rival hypothesis of equivalent predictive power. If all of this is so, then as philosophers from early times have supposed, temporal regularity provides the basis for a powerful argument in favour of design. It remains true, of course, that its import can be judged in full only when we have taken into account the relevance of other phenomena, many of which are apparently less favourable to the idea of design. (shrink)

In the presented article, I have analyzed the famous Saul Kripke statement that some a priori truths are contingent. I show, that despite Kripke’s thesis, in the historical understanding of contingency, the notions of contingency and apriority are in deep conflict with each other. In this understanding of contingency, the past, which can be known a priori, is not contingent, and the future, which is contingent, has difficulty acquiring a priori knowledge. Having stated Kripke’s thesis more (...) precisely, I propose three means in order to defend it in the historical understanding of possibility: by introducing the notion of “factual” future, by replacing the notion of apriority with the notion of apriority-in-the-future; by replacing the notion of apriority with the notion of historical apriority, and the notion of contingency with the notion of once-apriority. In the annex of the article, I present the formal analysis of the problem that I have introduced and three solutions which I have proposed in the language of temporal-modal logic of predicates for models of indeterministic time. (shrink)

Part of the scientific enterprise is to measure the material world and to explain its dynamics by means of models. However, not only is measurability of the world limited, analyzability of models is so, too. Most often, computer simulations offer a way out of this epistemic bottleneck. They instantiate the model and may help to analyze it. In relation to the material world a simulation may be regarded as a kind of a “non-material scale model”. Like any other scale (...) model, it does not per se give any scientific explanation but is first in itself an object of scientific enquiry, a world. Since this world is numerical, it is a priori measurable. Its role in scientific explanation will be discussed. (shrink)

This paper presents two different kinds a priori entitlements and argues that both are necessary to account for scientific knowledge. On the one hand, there are formal a priori entitlements whose existence is grounded in conditions on concept possession. On the other hand, there are material a priori entitlements that an agent accrues in virtue of practical reasoning. The discussion aims to reconcile the strengths of Christopher Peacocke’s and Michael Friedman’s recent work on the a (...) class='Hi'>priori, while overcoming the weaknesses of their respective proposals. (shrink)

This is the first of two papers that use off-training set (OTS) error to investigate the assumption-free relationship between learning algorithms. This first paper discusses the senses in which there are no a priori distinctions between learning algorithms. (The second paper discusses the senses in which there are such distinctions.) In this first paper it is shown, loosely speaking, that for any two algorithms A and B, there are “as many” targets (or priors over targets) for which A has (...) lower expected OTS error than B as vice versa, for loss functions like zero-one loss. In particular, this is true if A is cross-validation and B is “anti-cross-validation” (choose the learning algorithm with largest cross-validation error). This paper ends with a discussion of the implications of these results for computational learning theory. It is shown that one cannot say: if empirical misclassification rate is low, the Vapnik-Chervonenkis dimension of your generalizer is small, and the training set is large, then with high probability your OTS error is small. Other implications for “membership queries” algorithms and “punting” algorithms are also discussed. (shrink)

This article discuss two different approaches used to think historical a priori . On the one hand, when Husserl speaks about historical a priori , he refers to the tradition – one way of stating that history of thought is continuous and follows a common spirit. It implies, at the same time, that the tradition, despite being a discourse that precedes the subject, clearly to exist depends on a discursive subject at his present activity. On other, in (...) Foucault’s proposal, historical a priori will be saw from what would make possible the appearance of multiple statements in a given era . Therefore, it is all about a history not guided by subjectivity, but by the discourse itself. What remains of these two conceptions is to know the status of mathematics and physical sciences: they would be a model or an exception? (shrink)

The aim of the present paper is to contribute to the discussion on the constitutive a priori in science by linking it with the discussion on scientific laws and theories, in such a way to show how the different senses of the notion of constitutive a priori are not incompatible to each other and that they can be precised in a unified, though differentiated, manner.

According to the Classical Pessimistic Induction (CPI), otherwise positive features like predictive and explanatory success actually cast doubt on theories that display them. After all, they negatively correlate with truth. From this historical track record, it is inferred that current best theories are probably not (even approximately) true. The CPI is often wielded against realists about science, but others like Hume (1757), Pareto (1935), and Hájek (2007) extend it to philosophical theories more generally. In this paper, I unveil a (...) class='Hi'>priori refutations that defang the CPI in all its guises. To date, treatments of this topic typically assume the following: if the historical proportion of false theories increases, then it has increasingly negative bearing against realism. I show that this assumption is false. I identify three types of problems for the CPI, each attaching to some interpretation or other. The first problem is that the CPI violates a universal adequacy condition on the confirmation relation that restricts the relationship between entailment and disconfirmation. The second problem is that the induction’s target hypotheses preclude the track record from instantiating a list of epistemically significant properties that empirical information is supposed to afford. The third problem is that it is constitutively impossible for the CPI to have random samples; this implies that even the use of randomization procedures cannot help. In sum: my refutation is novel, accessible by pure reflection, and quite general. (shrink)

Sober and Elgin defend the claim that there are a priori causal laws in biology. Lange and Rosenberg take issue with this on Humean grounds, among others. I will argue that Sober and Elgin don’t go far enough – there are a priori causal laws in many sciences. Furthermore, I will argue that this thesis is compatible with a Humean metaphysics and an empiricist epistemology.

According to the received view, Marxian (ideology) critique and Foucaultian (genealogical) critique constitute two divergent approaches of critical theory that have remarkably different goals and little in common. In this article, however, we identify a guiding thread that connects the Marxian and Foucaultian traditions and motivates a distinctive approach within critical theory we call the ‘critique of constitution’. The problem of restricted consciousness, we show, is the core problem in common between Michel Foucault's critical history of thought and Georg Lukács's (...) theory of reification which underlies the tradition of Western Marxism and Frankfurt School critical theory. The problem concerns the limits of intelligibility and, by the same token, the apparent inevitability of the given social ontology. Our sense of what is possible depends on what we are able to think. But we know from the history of sciences that the limits of intelligibility change, thereby also altering our sense of what is possible. This becomes a political problem in connection with the intelligibility of social reality, because our restricted consciousness limits the alternatives we can so much as consider and seek to bring about. The critique of constitution, then, aims to expand the scope of possibility by revealing the contingent formation of the given limits of intelligibility. We argue that this is the paramount political task for Foucault and Lukács alike, other important differences notwithstanding. (shrink)

A relationist will account for the use of ‘left’ and ‘right’ in terms of relative orientations, and other properties and relations invariant under mirroring. This analysis will apply whenever mirroring is a symmetry, so it certainly applies to classical mechanics; we argue it applies to any physical theory formulated on a manifold: it is in this sense an a priori symmetry. It should apply in particular to parity violating theories in quantum mechanics; mirror symmetry is only broken in (...) such theories as a special symmetry. (shrink)

The epistemic status of Natural Selection has intrigued to biologists and philosophers since the very beginning of the theory to our present times. One prominent contemporary example is Elliott Sober, who claims that Natural Selection, and some other theories in biology, and maybe in economics, are peculiar in including explanatory models/conditionals that are a priori in a sense in which explanatory models/conditionals in Classical Mechanics and most other standard theories are not. In this paper, by analyzing what (...) we take to be the four possible interpretations of Sober’s claim, we argue that, terminological preferences aside, the possible senses in which explanatory models in Natural Selection can qualify, or include elements that can qualify, as a priori, also apply to Classical Mechanics and other standard, highly unified theories. (shrink)

The primary aim of this paper is to provide the exact diagnosis of the contingent a priori debate so far by untangling complicated issues surrounding it, such as singular thought, linguistic stipulation, and epistemic justification. I will first maintain that most philosophers' arguments for or against the contingent a priori are ultimately based on one of two conflicting intuitions about linguistic stipulation: sceptics of the contingent a priori have appealed to the intuition that extra-linguistic knowledge cannot be (...) acquired through the stroke of a pen, whereas proponents of it have appealed to the other intuition that one is in a position to understand a name that one introduces by oneself into one's own language. Then I will reconstruct the sceptics' and proponents' positions in their strongest form respectively and examine where they disagree, and finally I will argue that the contingent a priori debate cannot help but end in a stalemate without further scrutiny into singular thought. From this diagnosis, I conclude that in order to appropriately judge whether a contingent proposition is knowable a priori, we must first independently investigate what the conditions for singular thought are: the contingent a priori rides on the singular thought debate. (shrink)

To evaluate Hume's thesis that causal claims are always empirical, I consider three kinds of causal statement: ?e1 caused e2 ?, ?e1 promoted e2 ?, and ?e1 would promote e2 ?. Restricting my attention to cases in which ?e1 occurred? and ?e2 occurred? are both empirical, I argue that Hume was right about the first two, but wrong about the third. Standard causal models of natural selection that have this third form are a priori mathematical truths. Some are obvious, (...) others less so. Empirical work on natural selection takes the form of defending causal claims of the first two types. I provide biological examples that illustrate differences among these three kinds of causal claim. (shrink)

Traditionally, a justification for believing something is a priori is if, and only if, it is independent of experience. Throughout Western philosophy since Plato, some of the most divisive questions have been whether a priori justification exists, how it is possible, and how far it reaches. This book is structured around these three main questions. The first question has recently been modulated as to concern the significance of a priori justification: given the unclarities and presuppositions attached to (...) standard explications of the notion of a priori justification, is it still a useful notion for epistemology? In a tight dialectic, the chapters in this part either attack or defend the theoretical importance of that notion. The second part concerns the sources of a priori justification: since a priori justification is not grounded in experience--our arguably best understood source of justification--in what can it be grounded? The chapters in this part explore the possibility that a priori justification is grounded either in intuition or in understanding. The third part concerns the extent of a priori justification: beyond core cases like mathematical proof, what methods can yield a priori justification? The chapters in this part investigate to what degree and why methods like introspection, testimony, and others have an import on a priori justification. Overall, the book showcases and furthers some of the latest contemporary trends in thinking about these questions. (shrink)

In this chapter, I examine a priori knowledge from the perspective of my account of warrant. According to the epistemological tradition, what is known a priori is known, somehow, prior to or independently of experience; in the first section of this chapter, I attempt to clarify this claim and describe some of the general features of a priori belief and knowledge. In the second section I argue, among other things, that a priori warrant is fallible (...) and comes in degrees. I go on to consider an objection to the existence of a priori knowledge based on what has been called the causal requirement. I argue that there is no plausible form of the causal requirement that constitutes a good objection to the existence of a priori knowledge; along the way, I offer an argument for the conclusion that propositions cannot be concrete objects of any sort, and point out that it is quite possible to think of abstract objects as capable of standing in causal relations with us. (shrink)

This paper is aimed at understanding one central aspect of Bolzano's views on deductive knowledge: what it means for a proposition and for a term to be known a priori. I argue that, for Bolzano, a priori knowledge is knowledge by virtue of meaning and that Bolzano has substantial views about meaning and what it is to know the latter. In particular, Bolzano believes that meaning is determined by implicit definition, i.e. the fundamental propositions in a deductive system. (...) I go into some detail in presenting and discussing Bolzano's views on grounding, a priori knowledge and implicit definition. I explain why other aspects of Bolzano's theory and, in particular, his peculiar understanding of analyticity and the related notion of Ableitbarkeit might, as it has invariably in the past, mislead one to believe that Bolzano lacks a significant account oï a priori knowledge. Throughout the paper, I point out to the ways in which, in this respect, Bolzano's antagonistic relationship to Kant directly shaped his own views. (shrink)

Testimony is indispensable in the sciences. To deny the propriety of relying on it engenders an untenable scepticism. But this leaves open the issue of what exactly confers a scientist’s epistemic right to rely upon the word of her colleagues. Some authors have suggested a recipient of testimony enjoys an epistemic entitlement to trust the word of another as such, not requiring evidence of her trustworthiness, so long as there is not evidence of her untrustworthiness. I argue that, whether or (...) not such an on-no-evidence entitlement to believe what one is told exists, it shrinks to irrelevance in the explanation of the basis on which scientists take each other’s word in the scientific community. This is so, since a normally knowledgeable adult hearer is typically awash with relevant evidence, direct and circumstantial, for and against, concerning a teller’s trustworthiness, and this swamps any alleged entitlement to believe in the absence of such evidence. There need not be personal knowledge of the teller, since social role and topic provide evidence regarding trustworthiness. I also discuss the individuation of ‘testimony’ as an epistemic kind. I suggest that we should not attempt to define a category with sharp boundaries, but instead characterise a paradigm case—one person telling another something in face-to-face personal communication—and then notice other cases which both resemble and diverge from this in epistemically relevant features—lectures, media broadcasts, personal letters, personal diaries, etc.Author Keywords: Testimony; Justification; Knowledge; Individualism; Communication. (shrink)

The history of western philosophy is split to its core by a long-standing, fundamental dispute. On the one hand there are the so-called empiricists, like Locke, Berkeley, Hume, Mill, Russell, the logical positivists, A. J. Ayer, Karl Popper and most scientists, who hold empirical considerations alone can be appealed to in justifying, or providing a rationale for, claims to factual knowledge, there being no such thing as a priori knowledge – items of factual knowledge that are accepted on grounds (...) other than the empirical. And on the other hand there are the so-called rationalists, like Descartes, Spinoza, Leibniz, Bradley, McTaggart, who hold that a priori knowledge does exist, and even plays a crucial role in science. This long-standing dispute is resolved by the line of thought developed in this essay. The empiricists were right to deny the existence of a priori knowledge where this means factual knowledge of apodictic certainty justified independently of any appeal to experience. They were wrong, however, to deny the existence of a priori knowledge where this means conjectural items of factual knowledge whose acceptance is justified independently of any appeal to experience. Science requires there to be a priori knowledge in this latter sense, and two items of such knowledge will be exhibited. In addition to resolving this empiricist/rationalist dispute, the essay also develops a new conception of science – aim-oriented empiricism – and solves the long-standing problem of what it means to say of a theory that it is unified or explanatory. Furthermore, aim-oriented empiricism does not just change our conception of science; it requires that science itself needs to change. Science needs to become much more like the 17th century conception of natural philosophy, intermingling consideration of testable theories with consideration of untestable metaphysical, epistemological and methodological ideas. The whole relationship between science and the philosophy of science is transformed. The philosophy of science, construed as the exploration and critical assessment of rival ideas about what the aims and methods of science ought to be, ceases to be a meta-discipline, and becomes an integral part of science – or natural philosophy – itself. (shrink)

Both these ideas are intuitively plausible: rationality has an external aim, such as forming a true belief or good decision; and the rationality of a belief or decision is determined purely by facts about the thinker’s internal mental states. Unlike earlier conceptions, the conception of rationality presented here explains why these ideas are both true. Rational beliefs and decisions, it is argued, are those that are formed through the thinker’s following ‘rules of rationality’. Some rules count as rules of rationality (...) because it is rational to believe---through following other rules---that those rules are reliable. But there must also be certain basic rules, which are a priori, or ‘built into’ our basic cognitive capacities. That these rules are a priori is a purely internal matter; and in following these rules the thinker has done all that could reasonably be expected to achieve the external aim of forming a true belief or good decision. (shrink)

Following Mou Zongsan’s interpretation of Wang Yangming, this paper investigates the phenomenology of values and moral emotions in Max Scheler and the Confucian learning of heart, especially Wang Yangming. Part I illustrates the meaning of moral emotions in Confucianism and introduces Wang Yangming’s idea of pure knowing . Part II introduces Max Scheler’s idea of a priori value and feeling in order to explain how pure knowing could be both immanent and transcendental, both subjective and objective. Part III explores (...) the phenomena of value and feeling in Confucianism and Wang Yangming, giving a Schelerian interpretation of Wang Yangming’s teaching of four verses. Similar to Max Scheler, Confucian learning of heart affirms the intentional structure between hierarchy of values on the one hand and loving, preferring, and feeling of values on the other hand. This paper intends to clarify the basic structure of Wang Yangming’s thought; therefore, analyses on detailed moral emotions will be left to .. (shrink)

Phenomenologists were concerned with showing that essential structures of being, knowable by rational insight, are found more abundantly than commonly thought. Reinach shows that in the civil law there are essential structures, such as the structure of promising or of owning. These pre-positive structures provide the civil law with a foundation that can be known by philosophical insight. Though the enactments of the civil law are changeable, essential foundations are not. Of particular significance is Reinach's concept of a social act, (...) that is, of an act that addresses another and has to be heard by the other in order to be complete. Reinach shows that the essence of legally relevant acts, such as promising, comes to evidence when they are understood as social acts. (shrink)

This article focuses on providing a new a priori argument for the veracity of the doctrine of the Incarnation. This new argument, called the Subjectivity Argument, will be formulated in light of the concept of "omnisubjectivity," as proposed by Linda Zagzebski, and an "emotion," as conceptualised by the "somatic feeling theory," posited by Jesse Prinz. Doing this will provide a specific argument that provides strong grounds for affirming the necessity of the Incarnation, without, however, being subject to the primary (...) objections that can be raised against other a priori arguments for the Incarnation in the contemporary literature. (shrink)

What are Carnap's views on the epistemology of mathematics? Did he believe in a priori justification, and if so, what is his account of it? One might think that such questions are misguided, since in the 1930s Carnap came to reject traditional epistemology as a confused mixture of logic and psychology. But things are not that simple. Drawing on recent work by Richardson and Uebel, I will show that Carnap's mature metaphilosophy leaves room for two distinct notions of a (...) priori justification: one propositional, the other doxastic. The latter is especially interesting since it comes closest to a traditional understanding of a priority. On the other hand, Carnap has little to say about doxastic justification in his writings. This lacuna can be filled by drawing on an unpublished exchange with Irving M. Copi. In it, so I will show, Carnap endorses the view that agents can come to know all mathematical truths a priori. This fact, so I will further argue, can be used to adjudicate a dispute between Ricketts and Friedman about the nature and viability of Carnap's philosophy of mathematics—specifically his reliance on infinitary methods. (shrink)

The main general goal of this paper is to consider in a new light what is usually referred in the phenomenological tradition as “material a priori”. Through a consideration of the evidence we have of anything colored being extended, the paper attempts to show that this evidence is of a different kind from the one we have of other propositions also involving necessity. The main peculiarity of this evidence is found in its dependence on linguistic meaning therein involved (...) being rooted in a factual world and on an imaginative process deployed on the background of that rooting. (shrink)

The analytic/synthetic distinction has played a central role in discussions of a priori knowledge throughout the twentieth century. One of the primary reasons for the prominence of this distinction is the widespread influence of the tradition of logical empiricism which endorsed the following principles: All analytic propositions are knowable a prioriand All propositions knowable a priori are analytic.Hence, proponents of the a priori often argue in support of the contention that the propositions of a particular discipline, say (...) mathematics or logic, are knowable a priori by arguing that it consists solely of analytic propositions. On the other hand, detractors of the a priori often reject such knowledge on the grounds that the analytic/synthetic distinction is not cogent. My primary goal in this paper is to challenge the prevalent acceptance of. (shrink)

This paper explores the possibility that testimony is an a priori source, even if not a basic source, of rational support for certain kinds of cognitions, particularly for a kind of acceptance that it is natural to call presumption. The inquiry is conducted in the light of two important distinctions and the relation between them. One distinction is between belief and acceptance, the other between justification and rationality. Cognitive acceptance is also distinguished from behavioral acceptance, and their normative (...) status is shown to be governed by quite different principles. A major focus in the paper is the question of how the epistemic authority of testimony for cognitive acceptance of its content may depend on normative elements implicit in the kind of language learning and social coordination that are normal for at least the majority of human beings. (shrink)

In this dissertation, I defend a view that combines an analytic conception of a priori knowledge with a version of reliabilist platonism. Roughly put, the analytic theory is the view that our a priori knowledge can be explained by our grasp of analytic truths. Platonism is the view that there are abstract objects and those objects are partly responsible for some of our knowledge. My primary goal is to show that the hybrid account I develop solves central problems (...) that arise for the analytic view and platonism on their own. One well-known difficulty facing platonism is the following epistemological concern: given that abstracta are causally inefficacious, it is unclear how we can ever come to know anything about them. I argue that platonism on its own cannot adequately address this problem. Likewise, there is the following serious difficulty for the analytic theory: given the central role of implicit definitions for the analytic theory, if there are good reasons to doubt the unqualified success of such stipulations, it seems that the analytic theory fails to explain our a priori knowledge. I also show that this is a serious problem for the analytic theory. However, I show how a combination of the analytic theory and platonism can address both sets of difficulties: one view makes up for the shortcomings of the other. On the one hand, reliabilist platonism helps explain the success of the relevant stipulations; on the other hand, the analytic theory helps show why the causal inefficacy of abstracta is not a problem for our a priori knowledge. (shrink)

This paper discusses the modern idea of imagination and its various transformations in the phenomenological conceptual frameworks of Edward Casey, Mikel Dufrenne (1910-1995), Max Scheler (1874-1928) and Vasily Sesemann (1884-1963). I would like to raise and critically assess questions regarding the role of imagination in our consciousness: whether imagination is a productive or reproductive activity; and how, if at all, aesthetic expression limits the imagination. Casey criticizes Dufrenne for his attempt to unite imagination with aesthetic expression. He argues for the (...) autonomy of the imagination but leaves the question of the relationship between the imagination and perception unanswered. Dufrenne partially shares his theory of imagination with Sesemann. Both philosophers claim that imagination is a reproductive activity rather than a productive one in the sense that it is limited by the forms of the material a priori. In other words, aesthetic expression has to obey the principle of correlation between percipiens and perceptum. Creativity becomes possible when the creator is able to reproduce in his expression another subject’s possible perceptivity. Max Scheler emphasized the correlative connection of spiritual activity with the world. He linked the concept of imagination to the practical being in the world. In Sesemann’s aesthetics the role of embodied imagination in artistic creation and the perception of aesthetic objects were also considered. Both authors argued that the connection between imagination and the essential modes of the world’s givenness is guaranteed by the mode of embodied imagination. Both acknowledged that imagination is related to unconscious desires and drive. Both authors stated that the schematisms of imagination express the style of the perception of the world. The fact that imagination is an embodied phenomenon is illustrated by the way it exists in the world, since imagination is essentially a free activity restricted only by “the style of the world’s horizon.”. (shrink)

Based on the dispute between Protagoras and Socrates on the origin of ethics, one can ask the question of whether the principle of ethics is reason orfeeling/emotion, or whether ethics is grounded on reason or feeling/emotion. The development of Kant’s thoughts on ethics shows the tension between reason and feeling/emotion. In Kant’s final critical ethics, he held to a principle of “rational a priori.” On the one hand, this is presented as the rational a priori principle being the (...) binding principle of judgment. On the other hand, it is presented as the doctrine of “rational fact” as the ultimate argument of his ethics. Husserl believed that Kant’s doctrine of a rational a priori totally disregarded the a priori essential laws of feeling. Like Husserl, Scheler criticized Kant’s doctrine of a rational a priori, and therefore developed his own theory of an “emotional a priori”. Both of them focused their critiques on the grounding level of ethics. Scheler, however, did not follow Husserl all the way, but criticized him and reflected on his thoughts. At last, he revealed the primary status of a phenomenological material ethics of value. (shrink)

On rationalist infallibilism, a wide range of both (i) analytic and (ii) synthetic a priori propositions can be infallibly justified (or absolutely warranted), i.e., justified to a degree that entails their truth and precludes their falsity. Though rationalist infallibilism is indisputably running its course, adherence to at least one of the two species of infallible a priori justification refuses to disappear from mainstream epistemology. Among others, Putnam (1978) still professes the a priori infallibility of some category (i) (...) propositions, while Burge (1986, 1988, 1996) and Lewis (1996) have recently affirmed the a priori infallibility of some category (ii) propositions. In this paper, I take aim at rationalist infallibilism by calling into question the a priori infallibility of both analytic and synthetic propositions. The upshot will be twofold: first, rationalist infallibilism unsurprisingly emerges as a defective epistemological doctrine, and second, more importantly, the case for the a priori infallibility of one or both categories of propositions turns out to lack cogency. (shrink)

In this paper I examine Chalmers and Jackson’s defence of the a priori entailment thesis, that is, the claim that microphysical truths a priori entail ordinary non-phenomenal truths such as ‘water covers 60% of the Earth surface’, which they use as a premise for an argument against the possibility of a reductive explanation of consciousness. Their argument relies on a certain view about the possession conditions of macroscopic concepts such as WATER, known as ascriptivism. In the paper I (...) distinguish two versions of ascriptivism: reductive versus non-reductive ascriptivism. According to reductive ascriptivism, competent users of a concept have the ability to infer truths involving such concept from lower-level truths, whereas according to non-reductive ascriptivism, all that is required in order to be a competent user of a concept is to be able to infer truths involving that concept from other truths, which need not be lower-level truths. I argue, first, that the a priori entailment thesis is committed to reductive ascriptivism, and secondly, that reductive ascriptivism is problematic because it trivializes the notion of a priori knowledge. Therefore, I conclude that Chalmers and Jackson have not presented a convincing case for the claim that microphysical truths entail ordinary non-phenomenal truths a priori, especially when we understand this claim in the sense that is relevant for their argument against the possibility of a reductive explanation of consciousness. (shrink)

This article sketches out the key features of the debate on the analytic-synthetic distinction between phenomenology and logical empiricism, which took place in the early part of the twentieth century. On the one side, the author reconstructs the debate itself from an historical angle; on the other, he gives a theoretical account of the different positions and arguments. In particular, he has three main aims: a) to clarify how, according to Husserl, the analyticsynthetic opposition is to be understood as (...) the form-matter opposition; b) to show how this position has been misunderstood by neo-empiricist philosophers, in particular by Schlick in his paper against the theory of the factual a priori; c) to point out that Husserlian theory anticipates some relevant features in the matter of analyticity (i.e. the distinction between logical analytic and extra-logical analytic truths) which will be made fully explicit only by Carnap and Quine, philosophers of the following generation. (shrink)

I argue for the claim that there are instances of a priori justified belief – in particular, justified belief in moral principles – that are not analytic, i.e., that cannot be explained solely by the understanding we have of their propositions. §1–2 provides the background necessary for understanding this claim: in particular, it distinguishes between two ways a proposition can be analytic, Basis and Constitutive, and provides the general form of a moral principle. §§3–5 consider whether Hume's Law, properly (...) interpreted, can be established by Moore's Open Question Argument, and concludes that it cannot: while Moore's argument – appropriately modified – is effective against the idea that moral judgments are either reductively analyzable or Constitutive-analytic, a different argument is needed to show that they are not Basis-analytic. Such an argument is supplied in §6. §§7–8 conclude by considering how these considerations bear on recent discussions of “alternative normative concepts”, on the epistemology of intuitions, and on the differences between disagreement in moral domains and in other a priori domains such as logic and mathematics. (shrink)

We examine the sense in which logic is a priori, and explain how mathematical theories can be dichotomized non-trivially into analytic and synthetic portions. We argue that Core Logic contains exactly the a-priori-because-analytically-valid deductive principles. We introduce the reader to Core Logic by explaining its relationship to other logical systems, and stating its rules of inference. Important metatheorems about Core Logic are reported, and its important features noted. Core Logic can serve as the basis for a foundational (...) program that could be called Natural Logicism, an exposition of which will build on the (meta)logical ideas explained here. (shrink)

I look at incompatibilist arguments aimed at showing that the conjunction of the thesis that a subject has privileged, a priori access to the contents of her own thoughts, on the one hand, and of semantic externalism, on the other, lead to a putatively absurd conclusion, namely, a priori knowledge of the external world. I focus on arguments involving a variety of externalism resulting from the singularity or object-dependence of certain terms such as the demonstrative ‘that’. McKinsey (...) argues that incompatibilist arguments employing such externalist theses are at their strongest, and conclusively show that privileged access must be rejected. While I agree on the truth of the relevant externalist theses, I show that all plausible versions of the incompatibilist reductio argument as applied to such theses are fundamentally flawed, for these versions of the argument must make assumptions that lead to putatively absurd knowledge of the external world independently of the thesis of privileged access. (shrink)

An a priori thesis about evidence, defended by many, states that the only empirical fact that can affect the truth of an objective evidence claim of the form ‘e is evidence for h’ (or ‘e confirms h to degree r’) is the truth of e; all other considerations are a priori. By examining cases involving evidential flaws, I challange this claim and defend an empirical concept of evidence. In accordance with such a concept, whether, and the extent (...) to which, e, if true, confirms h is an empirical, not a priori, fact. (shrink)

The modem rationalist tradition initiated by Descartes has as one of its central tenets the independence of the human understanding from the senses. Regardless of the different ways in which independence from experience is understood, there is much common ground among the modem views on the a priori. Yet Kant, culminating this tradition, introduces an entirely new conception of the a priori never before articulated in the history of philosophy. This is the notion of elements in knowledge which (...) are independent of experience but nevertheless closely connected, in a special way, with experience.Although for Kant the a priori has a privileged position in the structure of knowledge - as it has for other modem rationalist philosophers - one of the most striking, and often neglected, aspect of his conception of the a priori is the great extent to which it is opposed to foundationalism. (shrink)

In this article I would like to discuss the concept of a priori mainly focusing on Kant’s Copernican revolution. How is metaphysics at all possible and how a priority takes place in Kantian metaphysics are the questions that I have addressed in the first part of my article. In this context, I have explained analytic, synthetic distinction from epistemological, metaphysical and semantical perspectives and I want to show how the concept of a priori and other associated notions (...) are derived from this different perspective. I end my discussion with an account of some fundamental objections raised by Quine and Kripke against Kantian analysis. Quine mainly wants to deny the traditional analytic and synthetic distinction. Besides, Kripke is trying to show that it is not true that the traditional account of the intimate relation between a priori and necessary proposition must be true, i.e., it is mistaken that a priori proposition must be necessary, it may be contingent. I would like to analyse and explain a few obstacles of Quine and Kripke following Putnam’s (externalist approach) and Quassim Cassam’s (non-empirical approach on a priority) line of different arguments. (shrink)

Scorned by analytic philosophers for much of the twentieth century, the a priori has been newly befriended in recent years. This development is healthy but there is reason to be concerned about how it is unfolding. In particular, it is largely characterized by a certain historical myopia: contemporary philosophers are able to see back to Kant but not much beyond him. While it may be true that the a priori changed with Kant, this in itself provides us with (...) a reason to go back before him. For other conceptualizations of the a priori, all but forgotten now, might help us to meet worries about it that Kant's familiar version cannot. (shrink)