I just found this photo I took awhile back while at the VA Hospital with my dad. I thought it was a bit of a badly designed user interface on an elevator.
The two bottom buttons are the “Up” and “Down” buttons for the elevator. However, the top button looks like you might need to press it in a medical emergency. That however is reserved for the key control.
Anyway, it made me think for a minute before just pushing the button. I was afraid if I pushed the wrong one I might be responsible for creating a medical emergency.