In electrical engineering class, I was told to think of electric circuits with a kind of hydraulic analogy. But could you extend this to entire computers? The Rube Goldberg Machine That Mastered Keynesian Economics, built by John Horton Conway[PDF] from a urinal flush mechanism.
It had to be put back together by Allen McRobie from the engineering department – “no economist could work out quite how Phillips had pieced the original machine together.”
Everything old is new again: Moore’s Law Is About To Get Weird