You are at a lever. A trolley is approaching 5 people tied to the track. You can pull the lever to diver the trolley to the other track, giving another person at the lever the same options you had.
Do you pull the lever?
Duh! Making it somebody else's problem with no drawbacks?
That trolley is in for infinite switches.
If everyone pull the lever to the other track, the trolley may stop moving because will at some time because it would need some oil refreshment or some Murphy's law happens.
that assumes a indefinitely large number of levers, and if so the trolley's efficiency can follow Moore's law or sth idk
It'll never hit anybody if we all collectively divert the trolley! Hooray!