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History of computing · Vintage Computer Federation · 1:03:51
Ken Thompson on Unix, Pipes and the Programs That Grew Around Them
In conversation with Brian Kernighan, Ken Thompson traces his path to Bell Labs, the early Unix system on a PDP-7, and the practical proposal that brought a PDP-11. He recalls the arrival of pipes, the release of grep, the transition from B to C, and his work on computer chess.
Computability & complexity theory · Confreaks · 53:21
From Anonymous Functions to the Y Combinator
Starting with Turing machines and lambda calculus, Jim Weirich uses factorial to introduce higher-order functions, fixed points and functional refactoring, then derives a fixed-point combinator for Ruby's strict evaluation. The exercise reveals how recursion can emerge from anonymous functions.