Abstract

In the thesis I criticize the project of showing that the primary qualities mentioned in a special "scientific" or "objective" conception of the world enjoy a status that secondary qualities do not, and suggest how the appeal of such a distinction might be overcome. ;Descartes argued that we erroneously ascribe illusory "secondary" qualities to the world. In the painting analogy of the First Meditation I identify a line of reasoning that has been previously overlooked yet is crucial to the success of Descartes's project. I show why Descartes's explanation of how we come to have the supposedly erroneous beliefs is unacceptable, and that contemporary accounts of so-called projective error fail for similar reasons. These failures suggest that an explanation of the thoughts we do have cannot succeed without appeal to more than the limited resources Descartes took to be available. ;Pursuing this suggestion I examine alternatives to the form of anti-skeptical reasoning of the painting analogy. I develop a modified transcendental strategy that resembles aspects of Davidson's treatment of error, while respecting the realism that motivates the project in question. I argue that beliefs about the colors of objects, for example, are systematically related and that the attribution of systematic disagreement cannot be justified. This shows that the systematic error Descartes claimed to find in our ordinary judgements is not fully intelligible. ;Finally I survey some contemporary alternatives to Descartes's account. Many dispositional analyses of qualities aim to revise our ordinary understanding of these qualities, thus taking for granted a prior demonstration of the distinction in question. I argue that no non-revisionary dispositional analysis of these qualities can succeed. I show that the notion of "anthropocentricity" is irrelevant to the project. Lastly I consider accounts that characterize primary qualities by their explanatory power. Previous arguments show that identifying some objects as possessing certain qualities is a condition of identifying beliefs as beliefs about those qualities. I end with a lesson about the limits of the explanatory power of a special austere conception of the world