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Turing Letter

This November 1946 letter was the first contact between Alan Turing and Ross. Later they were both members of the Cambridge-based dining and discussion group known as The Ratio Club. In this letter, Turing refers to Sir Charles Galton Darwin, the director of the National Physical Laboratory, who was the grandson of the naturalist Charles Robert Darwin, whom Ross admired greatly and had drawn inspiration from. Near the end of the second page, Turing advises Ross to "... do your experiments on the ACE, instead of building a special machine.", but Ross went ahead and built the "special machine" — which became known as the "Homeostat".

NOTE: This is the original signed letter, an unsigned carbon copy is available on alanturing.net.


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