Reading group: The Coordinates of Thought

This is the reading group for The Coordinates of Thought, the book this site grew out of. The categories, parts and thinker profiles here follow its map.

Use this thread for anything the book raises: a card you want to argue with, a position you think is mapped in the wrong place, a tradition you think deserves more room, or a question you think is missing. Disagreement is welcome — on the thirteen contested questions the book itself takes no side.

A question to start us off: which question in philosophy is hardest to place on a map, and why?