Anand Vaidya

Modal rationalism includes the thesis that ideal primary positive conceivability entails primary possibility. Modal monism is the thesis that the space of logically possible worlds is coextensive with the space of metaphysically possible worlds. In this paper I explore the relation between the two theses. My aim is to show that the former thesis implies the latter thesis, and that problems with the latter make the former implausible as a complete picture of the epistemology of modality. My argument explores the relation between logical modality and metaphysical modality.

Recent work in philosophical methodology by experimental philosophers has brought to light a certain kind of skepticism about the role of intuitions in a priori philosophical inquiry. In this paper I turn attention away from a priori philosophical inquiry and on to the role of intuition in experimental design. I argue that even if we have reason to be skeptical about the role of intuition in a priori philosophical inquiry, we cannot remove intuition from inquiry altogether, because appeals to intuition are essential for experimental design.