One of the elevators in my building is out of order. I happened to be riding one of the functional elevators with the building manager, who explained that somebody got stuck in the broken one. The person who got stuck said they were in there for half an hour, while the elevator technician reported that they were actually in there for 10 minutes.
Hence, the Golden Ratio of Elevator Trappage. For every actual minute that passes, it feels like three minutes have passed. Remember this the next time you’re talking to an elevator escapee.