Comments by "John Warner" (@johncrwarner) on "Computerphile" channel.

  1. It is indeed Wittgenstein's Ladder from the Tractatus Logico-Philosophicus 6.54 My propositions serve as elucidations in the following way: anyone who understands me eventually recognizes them as nonsensical, when he has used them—as steps—to climb beyond them. (He must, so to speak, throw away the ladder after he has climbed up it.) He must transcend these propositions, and then he will see the world aright.
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  2. The first non-mainframe computer I used at college in the early 1980s was a cp/m machine which was used for writing up theses.
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  3. Frighteningly I started on CESIL (Computer Education in Schools Instruction Language) on punch cards run over night by the local University. I rapidly outgrew that trying to do basic primary factors of numbers. So I moved to Fortran IV It was the mid-seventies and the school had one computer for the computer studies class.
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