> the engine ran too hot for electronics, so they designed a hydraulic mechanical computer responsible for regulating various inputs

There was a proposal at one point for NASA to deploy a 21st-century automaton to Venus because the atmosphere is too corrosive for an electronic computer. Supposedly it would have delivered its data to an orbiter using a balloon and then the orbiter transmits the information over radio. I really wish they'd do that, I would love to see what could be done with mechanical computing using modern technologies.

Unfortunately there aren't a whole lot of situations where clockwork logic makes more sense than semiconductors.