In his book Mind and World (1994), John McDowell defends the Kantian positi
on that the content of experience is conceptual. Without this Kantian assum
ption, he argues, it would be impossible to understand how experience may r
ationally constrain thought. But McDowell's Kantianism is either false or e
mpty, and his view of the relation between mind and world cannot be stated
without transcending the bounds of sense. McDowell's arguments supporting t
he Kantian thesis, which are very different from Kant's arguments, essentia
lly involve a fallacy of ambiguity. In order to understand how thought may
be rationally constrained by experience we should become empiricists.