Mistakes have been known to happen, like carving the wrong value for pi into a wall: https://en.wikipedia.org/wiki/Washington_Park_MAX_Station#Elevators https:

Mistakes have been known to happen, like carving the wrong value for pi into a wall: https://en.wikipedia.org/wiki/Washington_Park_MAX_Station#Elevators https://en.wikipedia.org/wiki/Washington_Park_MAX_Station#El...