Harold Langsam

There is a continuing debate as to whether externalism about mental content is compatible with certain commonly accepted views about the nature of self-knowledge. Both sides to this debate seem to agree that externalism is _not compatible with the traditional view that self-knowledge is acquired by means of observation. In this paper, I argue that externalism is compatible with this traditional view of self-knowledge, and that, in fact, we have good reason to believe that the self-knowledge at issue is acquired by means of observation

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

In this paper, I criticize Michael Huemer's phenomenal conservatism, the theory of justification according to which if it seems to S that p, then in the absence of defeaters, S thereby has at least some degree of justification for believing that p. Specifically, I argue that beliefs and hunches provide counterexamples to phenomenal conservatism. I then defend a version of restricted phenomenal conservatism, the view that some but not all appearances confer prima facie justification on their propositional contents. Specifically, I defend the view that S has defeasible justification for believing that p if and only if it seems to S that p and it seems to S that she is acquainted with the fact that makes p true. Finally, I criticize Huemer's self-defeat argument for phenomenal conservatism