The fire is detected in the building. Please evacuate. Do not use the elevator.I’ve heard this emergency message perhaps a thousand times. It is deeply engraved in my mind to the extent that the moment I hear the first beep of the fire alarm, I know this message will come up. I heard the chime sound, and I knew I should evacuate and not use the elevator.But in all seriousness, why? Why shouldn’t I use the elevator, and what would happen if I did (in case the building would not prevent me from...