  The factual claim that I know what I am thinking appears to be obviously true insofar as anyone familiar with the meaning of ‘centaur’ conceives of centaurs when reading sentences that predicate properties of centaurs. Representational theories of thought like the Way of Ideas imply in this case that I do not conceive of centaurs but rather I conceive of mental representations of centaurs—images of them or words about them (EIP 4.2, 312). But Reid is asserting something different: I conceive of a centaur itself—not a mental representation of a centaur. Appreciating this point is necessary for understanding how strange Reid's theory appears to be.