Medieval & Modern Philosophy · 20th century
Wittgenstein
The philosopher who solved philosophy twice: the Tractatus' picture theory and silence, then the Investigations' language games, meaning as use, family resemblance and the private language argument.
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Key idea
Prereqs: Frege and Russell (logic). Next: Popper; AI and language models (compare). Sources: Wittgenstein, *Tractatus Logico-Philosophicus* (1921), *Philosophical Investigations* (1953); Ray Monk, *Ludwig Wittgenstein: The Duty of Genius* (1990).Next: 1. Life