> It is highly unlikely that he ever thought of the concept of parallel processing or the idea that a computer might be used for anything other than problem sol

> It is highly unlikely that he ever thought of the concept of parallel processing or the idea that a computer might be used for anything other than problem solving and the execution of instruction sequences. Well that pinged the old poppycock meter. Turing definitely knew of machines that weren't just used for executing instructions. He briefly alludes to so-called "choice machines" that interacted with an operator in his paper on the Entscheidungsproblem—they're just not his focus. There are also so called "Multitrack Turing Machines" that seem to fit the author's idea of a parallel machine (multiple heads, multiple tracks). However, these are Turing equivalent (and I believe, but can't find a citation, that Turing was the one who proved that, or at least was aware of it). The author should read this before he proposes any "new" models of computation which Turing "probably never thought of": http://en.wikipedia.org/wiki/Turing_machine_equivalents http://en.wikipedia.org/wiki/Turing_machine_equivalents