Transcendental Illusion in the First Antinomial Conflict

In their criticism of metaphysics, Kant and Wittgenstein invoke elaborated conceptions of philosophical illusion. ‘The essential thing about metaphysics’, says Wittgenstein, is ‘that the difference between factual and conceptual investigations is not clear to it.’ (RPP I §949) The error, he says, arises from the fact that, in philosophy, ‘[w]e don’t look at the actual language-game’.