In a number of those systems, the buttons are a placebo that are wired to nothing. [1] [2] [1] - https://www.nytimes.com/2016/10/28/us/placebo-buttons-elevator

In a number of those systems, the buttons are a placebo that are wired to nothing. [1] [2] [1] - https://www.nytimes.com/2016/10/28/us/placebo-buttons-elevators-crosswalks.html https://www.nytimes.com/2016/10/28/us/placebo-buttons-elevat... [2] - https://www.nytimes.com/2004/02/27/nyregion/for-exercise-in-new-york-futility-push-button.html https://www.nytimes.com/2004/02/27/nyregion/for-exercise-in-...