You might not have noticed it (now you will!), but lots of elevators have mirrors near them. This is no coincidence, nor is it some sort of Feng Shui design tip. Mirrors usually hang near elevators so people have something to do while they wait for the doors to open. Yes, hotel lobbies have been fooling you into patiently waiting for years.
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The New York Times explains where this idea originated: "The idea was born during the post-World War II boom, when the spread of high-rises led to complaints about elevator delays. The rationale behind the mirrors was similar to the one used at the Houston airport: give people something to occupy their time, and the wait will feel shorter. With the mirrors, people could check their hair or slyly ogle other passengers. And it worked: almost overnight, the complaints ceased."