cross-posted from: https://lemm.ee/post/4711771
At least some of the signs were desgined by Anders Sandberg:
I found the image on Bruce Sterling's Tumblr.
The source is from u/FuckMyHeart's (reddit user) comment, which has a bit more info:
From the same comment and user:
The perpetual motion one makes sense I think since I'd something can run forever could you even stop it? Or maybe it holds a certain torque until acted upon by a greater force
"The lumber mill had to be shut down because someone overloaded the perpetual motion machine providing power to it and now the bosses are trying to figure out if they can get it fixed or if it's cheaper to buy a new one, they just don't make things like they used to"