Epistemic Norms, A Priority, and Self-Knowledge Richard Flockemann PhD Thesis University of York Department of Philosophy March 2011 Abstract This thesis is primarily focussed on developing a novel characterisation of the distinction between a priori and a posteriori justification. My working hypothesis is that we can make a surprising amount of progress in this field by paying attention to the structure of epistemic norms. I argue that direct a priori beliefs are governed by a structurally different kind of epistemic norm to the one that governs perceptual beliefs. That, I argue, is where the fundamental epistemological difference between the two categories lies. I call this view ‘Seeming-Independence’. Seeming-Independence holds that while a posteriori beliefs depend epistemically on how it perceptually seems to us, there is no corresponding dependence relation between a priori beliefs and how it intellectually seems to us. Intellectual seemings, or intuitions, simply do not play the kind of epistemological role that perceptual experiences play. The central contention of this thesis is that Seeming-Independence is a theoretically fruitful view of the a priori. The arguments I marshal in favour of Seeming-Independence are in this way primarily focussed on the explanatory power and flexibility of the view. In effect, what I suggest is that Seeming-Independence, unlike some of its rivals, is a particularly clear way of dividing the a priori from the a posteriori, and it allows us to neatly bypass some of influential criticisms of a priority. Contents Acknowledgements .................................................................................................. i Declaration .............................................................................................................. ii Introduction ............................................................................................................. 1 1: Epistemic Normativity .......................................................................................... 6 1.1 Epistemic rationality and epistemic blame .................................................... 8 1.2 Non-moral norms and blame....................................................................... 13 1.3 Normative conflict ....................................................................................... 17 1.4 Subjective and objective norms ................................................................... 22 1.5 Objective epistemic norms .......................................................................... 26 1.6 Epistemic norms and doxastic rules ............................................................. 33 1.7 Conclusion................................................................................................... 39 2: The Infallibility Thesis Reconsidered ................................................................... 41 2.1 Fallible a priori warrant ............................................................................... 42 2.2 Following epistemic norms .......................................................................... 45 2.3 Miscalculations and reasoning slips ............................................................. 48 2.4 Fallacious arguments ................................................................................... 54 2.5 Euclidean geometry..................................................................................... 61 2.6 Intuitions as intellectual seemings ............................................................... 63 2.7 Intuition as pure understanding .................................................................. 67 2.8 Intellectual and Perceptual Seemings .......................................................... 71 2.9 Conclusion................................................................................................... 75 3: A Priority As Seeming-Independence ................................................................. 78 3.1 Experience independence as seeming-independence .................................. 79 3.2 Traditional infalliblism and mathematical knowledge .................................. 88 3.3 Seeming-Independence and ultra-reliability ................................................ 94 3.4 Problems of length and width ..................................................................... 98 3.5 Cognitive processes and epistemic norms ................................................. 105 3.6 Following norms and the transmission of epistemic warrant ..................... 109 3.7 Conclusion................................................................................................. 114 4: Self-Evidence and Analyticity ........................................................................... 116 4.1 Metaphysical and epistemic analyticity ..................................................... 117 4.2 Williamson on understanding-assent links................................................. 121 4.3 Cognitive and non-cognitive accounts of understanding ........................... 126 4.4 Blocked competencies and epistemically ideal conditions ......................... 130 4.5 Analyticity and semantic intuitions ............................................................ 138 4.6 Conclusion................................................................................................. 142 5: Self-Evidence and Self-Knowledge .................................................................... 144 5.1 Self-evidence and the Problem of Self-Knowledge..................................... 144 5.2 Vindicating and non-vindicating explanations ........................................... 149 5.3 Scepticism about self-knowledge .............................................................. 151 5.4 Immunity from brute error and self-knowledge ........................................ 157 5.5 Epistemological explanations .................................................................... 166 5.6 A priority as a solution to the Problem of Self-Knowledge ......................... 171 5.7 Self-knowledge as a subset of the a priori ................................................. 176 5.8 Conclusion................................................................................................. 179 Conclusion ........................................................................................................... 180 References ........................................................................................................... 184 Acknowledgements I would like to thank first and foremost my supervisor, Professor Tom Stoneham, for his extremely helpful advice, his insightful observations, and his encouragement. I am also grateful for the overwhelming generosity and emotional support my family provided throughout this four year period: particular mention must go to my parents, Janet and Richard; my siblings, Tanya and Peter; and my grandmother, Joyce. i Declaration I declare that I am the sole author of this work. None of this material has been published elsewhere. ii Introduction What is the difference between a priori justification or warrant and a posteriori warrant? Can we plausibly construe this distinction such that it is both genuinely epistemological and philosophically important? What does it mean to say that a priori warrant is independent of experience? What sort of mental state counts as experience in this sense? What kinds of propositions can we know a priori? These are the sort of questions that this thesis is devoted to exploring. My working hypothesis is that we can make a surprising amount of progress on questions like these by paying attention to the structure of epistemic norms. In essence, the view I defend is that direct a priori beliefs are governed by a structurally different kind of epistemic norm to the one that governs perceptual beliefs. That, I argue, is where the fundamental epistemological difference between the two categories lies. This project as a whole is very firmly grounded in a particular understanding of epistemic norms. I begin by drawing attention to the fact that, amongst those that take a normative approach to epistemology, questions of whether a believer is rational in holding her beliefs are often settled by considering whether it would be appropriate to epistemically reproach, or criticise, or in any sense blame her for how she went about forming and maintaining her beliefs. If there is nothing to criticise or find fault with in her epistemic behaviour then this establishes that her belief is rational. A key contention of this thesis is that this is a mistake. What I take to be the central error here is that discussions of epistemic normativity tend to uncritically model epistemic norms on moral norms. There is a strong tradition in moral philosophy to take normative moral judgements to be closely connected to ‘reactive attitudes’ like praise and blame. The assumption being made in normative epistemology is that there is a similarly close connection between analogous epistemic judgements and analogous epistemic sentiments. 1 The presumption that epistemic norms have much in common with moral norms is a long-standing one, dating all the back to Clifford’s classic The Ethics of Belief (1877). However, in my view, it is an assumption that should be challenged. Of late there has been considerable and increasing discussion of non-moral norms. Philosophers frequently debate about what the norms of assertion are, or whether mental content and beliefs are things that properly have their own distinct norms. Now the picture of normativity that emerges from these debates is importantly different from moral normativity in that there is nothing like the close connection between normative judgements and blame-like sentiments. This is because exactly what these non-moral norms require from us is not always transparent to us. For example, consider the norm of assertion. The two most influential accounts of the norms of assertion, are the Knowledge Account (‘assert only what you know’) and the Truth Account (‘assert only what is true’). Now since it is not always transparent to us whether some proposition p is true or known, it follows for both accounts that the fundamental norm of assertion is structured such that it is possible to misunderstand, through no fault of our own, what it is that we may and may not assert. If we are fooled into thinking we know p when p is false, then we will have violated the norm of assertion if we assert that p, even if we had excellent reasons for thinking we knew that p (and hence that p was true). I claim that some epistemic norms are non-transparent in exactly this way: we may, through no fault of our own, be mistaken about what epistemic norms require from us in some specific context. As such, we may also blamelessly fail to comply with those norms. The resulting beliefs, I argue, are both irrational and blameless. Now the use I put this account of epistemic norms to, as I have mentioned, is to develop and defend a new characterisation of the a priori. I call the account ‘Seeming-Independence’. Seeming-Independence might be described as follows: while a posteriori beliefs depend epistemically on how it perceptually seems to us, there is no 2 corresponding dependence relation between a priori beliefs and how it intellectually seems to us. Intellectual seemings, or intuitions, simply do not play the kind of epistemic role that perceptual experiences play. The fact that a priori beliefs are not epistemically dependent on intuitions, I argue, indicates that the norms governing non-inferential a priori beliefs are— unlike those governing perceptual belief—truth guaranteeing. Insofar as one really does correctly follow those particular epistemic norms, one is guaranteed to arrive at true belief. Now the major contention of this thesis is that Seeming-Independence is a theoretically fruitful view of the a priori. The arguments I marshal in favour of Seeming-Independence are in this way primarily focussed on the explanatory power and flexibility of the view. In effect, what I suggest is that Seeming-Independence, unlike some of its rivals, is a particularly clear way of dividing the a priori from the a posteriori, and it allows us to neatly bypass some of influential criticisms of a priority. Since Seeming-Independence is fundamentally a claim about epistemic norms, one advantage it has is that it uses a clearly epistemological criterion in dividing the a priori from the a posteriori. It is well positioned to respond to criticisms that the a priori/a posteriori distinction is ad hoc or incoherent. Another advantage of Seeming-Independence is that it does not wed itself to an implausible philosophy of mind. Seeming-Independence does not commit us to the existence of any kind of strange, perception-like faculty of priori insight. Seeming-Independence is also perfectly consistent with the thought that humans are limited and fallible reasoners. The plausibility of Seeming-Independence, however, depends crucially on whether the idea of a truth-guaranteeing norm is intelligible. The latter part of the thesis is devoted to exploring whether it is. This exploration leads us relatively far afield: into discussions of analyticity and discussions of self-knowledge. 3 Essentially, the plausibility of Seeming-Independence depends crucially on whether or not we can make sense of an unusual property; a property that I call self-evidence. Seeming-Independence ultimately presupposes that self-evidence is actually a property that some propositions have. And this presupposition would be illegitimate without any explanation of what self-evidence is. I suggest that there are two readily available, paradigmatic examples of self- evident propositions: those propositions that are analytic and those propositions that we can know introspectively. Now neither suggestion is entirely unproblematic. While Paul Boghossian has developed a new account of analyticity that appears capable of avoiding the problems that Quine famously raises, this version of analyticity—epistemic analyticity—has recently encountered a major set-back. Timothy Williamson has developed a recipe for generating decisive-looking counter-examples to it. The account of analyticity Boghossian advocates depends crucially on the claim that there are links between understanding analytic propositions, and assenting to them. Failures to assent entail failures of understanding. Williamson offers several very plausible-looking counter-examples to this suggestion: examples of highly competent language users who, as a result of suitably bizarre background beliefs, steadfastly refuse to assent to a number of paradigmatically analytic propositions. The claim that our own beliefs, desires, intentions, and so forth are self- evident to us likewise faces challenges. While it is widely agreed that self- knowledge of the sort I am interested in seems to have many of the same epistemological characteristics that self-evident beliefs do, there is decidedly less agreement over whether it really does have those characteristics. There are a number of prima facie plausible construals of self-knowledge that deny that it genuinely does have any special epistemic qualities. Moreover, the suggestion that self-knowledge is self-evident would imply that Seeming-Independence is committed also to the view that our knowledge of our own contingent intentions, beliefs, etc., counts as genuinely and substantively a priori, a view which some might find unacceptably implausible. 4
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