On: Elevator Saga: An elevator programming game (2015)

[bombcar]

That’s an example of a thing that may work well but would piss users off - it apparently reversing would annoy.

[Thorrez → bombcar]

Not just annoy. Some users might think they accidentally got on the wrong elevator ("oops, I got on a down elevator instead of an up elevator") and leave the elevator at the next floor to ask for a new elevator.