Harold Langsam

Thoughts have content; for instance, the content of the thought that Plato is a great philosopher is that a certain person, Plato, has a certain property, the property of being a great philosopher. In thinking this thought, I become related in a certain manner to this person, Plato, and to the property of being a great philosopher. In this dissertation, I begin to develop a theory of how such relations come to obtain. ;In chapter 1, I examine and ultimately reject the two approaches to intentionality most popular today: eliminativism and reductionistic physicalism. In chapter 2, I begin to present my own theory of intentionality, the starting point of which is the familiar idea that experience is a necessary condition for thought. In motivating this familiar idea, I explain the sense in which experience can be said to have a qualitative character, and I describe those specific aspects of qualitative character that figure in my subsequent account of how we succeed in forming concepts of material objects. Finally, I end the chapter by presenting the principal challenge for my theory: given that experience is a necessary condition for concept formation, how do we succeed in forming concepts of things other than our experiences? ;In chapter 3 I begin to meet this challenge. I oppose empiricism by arguing that the content of our concepts derives from two sources: experience, and the syntactic features of our thought. In chapter 4 I explain how by referring to phenomenal features with two-place rather than one-place predicates, we can form concepts of objects that exist independently of experience . In chapter 5 I defend naive realism. The account of demonstrative thought I present in chapter 4 presupposes a kind of naive realist theory of perception, and in chapter 5 I defend this theory against such familiar arguments as the argument from hallucination, the causal argument, and the time-gap argument

I think it is important to try to make sense of these thoughts concerning the justificatory role of experiences, for I suspect that we are losing the ability to see why philosophers have traditionally been attracted to such thoughts. Coherentism and reliabilism, perhaps the two most currently popular theories of epistemic justification, appear simply to reject the idea that experiences can justify beliefs. Thus according to coherentism, the view that ‘a belief is justified by its coherence with other beliefs one holds,’ it is only other beliefs, not experiences, that can justify beliefs. Although there is little consensus as to how the notion of coherence should be explicated, it is generally agreed that experiences are not the sort of thing that can cohere with beliefs. Reliabilism, by contrast, holds that ‘a belief is justified if and only if it is “well-formed,” i.e., it has an ancestry of reliable and/or conditionally reliable cognitive operations.’ In other words, according to reliabilism beliefs are justified, not by experiences, but by being caused by reliable belief-forming processes. Experiences may be formed in the course of such processes, but they need not be, and even when they are, they make no contribution to the justification of the beliefs that are formed as the result of those processes. What makes a belief-forming process justification-conferring, according to reliabilism, is simply that it is reliable, not that it gives rise to experiences. So neither coherentism nor reliabilism seems to allow any room for the traditional thought that experiences justify beliefs.