Thau maintains that our conception of consciousness begins with and depends upon a few fundamental errors. He elucidates these errors by discussing three important philosophical puzzles-Spectrum Inversion, Frege's Puzzle, and Black-and-White Mary - each of which concerns some aspect of either consciousness or cognition. He argues that it has gone unnoticed that each of these puzzles presents the very same problem and, in bringing this commonality to light, the errors in our natural conception of consciousness and cognition are also revealed.