Computation is not built on the idea of the Turing machine... That is a very, very strong claim that I assume you did not mean to imbue with such heft. The Tur

Computation is not built on the idea of the Turing machine... That is a very, very strong claim that I assume you did not mean to imbue with such heft. The Turing machine, rather, is a Platonic ideal -- a model -- of a computing machine which is transparent to humans performing analysis on it. There are other models, and there are other means of computation.