Strange Situation #351 - Elevators

I was with a friend a couple of weeks ago. We were walking down a hall toward an elevator. I told him, "You know what's weird? It seems more often than I would expect I press an elevator button to call an elevator and the elevator door instantly opens. No big deal, right? But then, someone walks out! I always find that disconcerting, as if the elevator had been sitting at that level for a long time and the person inside was trapped until I saved him. But the person never looks grateful or upset, so I have to believe that I happened to hit the button just at the moment when the elevator arrived!" My friend said that was weird and that that has never happened to him.

He then pressed the button to call the elevator. The doors instantly opened...and someone walked out. Not looking grateful or scared at all. But my friend looked a little surprised!