Wittgenstein and Cassirer on Hinges and Relativity

The paper explores the striking similarities between some of Wittgenstein’s core claims in On Certainty (1969), including the famous hinge metaphor, and Cassirer’s Einstein’s Theory of Relativity (1921). Moreover, it suggests that Wittgenstein’s remark on relativity in On Certainty might have been triggered by his reading of Cassirer’s book.