a man,
provided with paper,
pencil and rubber,
and subject to strict discipline,
is in effect a universal machine.

signature of Alan Mathison Turing
Visual representation of a Turing Machine
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touch

c. 1300
to make deliberate physical contact
c. 1400
to affect or move mentally or emotionally
c. 1500
to affect in a negative way
c. 1600
a slight attack
1884
figurative sense of communication
1927
skill or aptitude in some topic
1933
the meeting of two personalities is like the contact of two chemical substances: if there is any reaction, both are transformed
1979
to mark a file or document
1981
splintering fragments of conversation, never got down to cold hard facts, all touch but no contact
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