"Turing’s contribution to this discussion was to advocate the use of gin, which he said contained alcohol and water in just the right proportions to give a zero temperature coefficient of propagation velocity at room temperature."
Wilkes, Maurice V. Computers Then and Now. 1967 ACM Turing lecture. Journal of the Association for Computing Machinery, Vol. 18, No. 1, January 1968 [
acm.org]
(Original entry:
http://saccade.tumblr.com/post/4011352471)