Terry Pratchett fans might remember a contraption called the "Glooper" from the book "Making Money".

[anotherjen@mindly.social]

Terry Pratchett fans might remember a contraption called the "Glooper" from the book "Making Money". It was a computational model of Anhk-Morpork's economy that worked by sending water through various valves and tubes. In the end, it worked a little too well.

TIL that this sort of machine was used in this world, too, in the 1940s.

https://www.npr.org/sections/planet-money/2026/04/07/g-s1-116575/how-bill-phillips-used-flowing-water-to-model-the-economy

#Pratchett
#Discworld