6 thoughts on “He who refuses to do arithmetic is doomed to talk nonsense”

  1. Never met jmc but I was sad to hear about his passing. I didn’t agree with much he wrote in sci.env (apart from no arithmetic-> nonsense) but he was always crystal-clear, conscise & interesting. I haven’t used Lisp for 30 years but it changed my view of programming languages.

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  2. Have you noticed that he was born 2-3 weeks before the conference in Switzerland where Bohr, Einstein, Heisenberg et al hammered out the version of quantum physics that has been mostly unchallenged until now? Of course, this is merely symbolically interestling, like the birthday shared by Lincoln and Darwin.

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  3. And LISP also eventually provided upward fun args and so became what John had always wanted, a computer implementation of the (untyped) lambda calculus.

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