PHIL 201 Lecture Notes - Lecture 11: Andrew Hodges, David Hilbert, Turing Machine
10 Apr 2019
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Idea that pain doesn"t exist is too hard to swallow: so rejects the idea that id theory is true. Found out how to break german enigma u-boat code: alan turing: 1912-54, passion for botany, wrote first software, 1952 arrested as homosexual. Suicide in 1954: was it accident, ate apple with cyanide, could have been an accident, andrew hodges biography, alan turing: the enigma. In 1936 turing published a paper, aiming to show that there was no such method: the argument required a precise conception of "mechanical method" It can: change its internal state, change the symbol on the square, move forward, move backward, halt (stop) For every possible combination of state and every possible set of sensory inputs: an instruction specifying probabilistically a new state, probability of a motor output. If input is s1 and internal state is i, then prob=p move to state s2 and prob=q produce output m.
