http://c5febborw3avzp5gobl6nvbbwflkjrfigqbm7z3i4czxu3bjrc5hsqad.onion/library/Fiction/Isaac%20Asimov%20-%20The%20Feeling%20Of%20Power.html
"Technician Aub apparently had, as his hobby, the
reconstruction of some of these ancient devices, and in so doing he
studied the details of their workings and found he could imitate them.
The multiplication I just performed for you is an imitation of the
workings of a computer."