Comment by jaclaz

>Similar to the trick of putting mirrors in and around elevators so that people can just "ape out" while they're waiting.

Actually more similar to the "close door button" that doesn't actually do anything in a number of elevators:

http://www.dailymail.co.uk/sciencetech/article-3880250/The-c...

or, more generally, "placebo buttons":

https://en.wikipedia.org/wiki/Placebo_button