How many of us have pushed the “Door Close” button on the elevator thinking it closed the door faster? Interestingly that button on most elevators is a placebo. It does not actually close the door faster. The sole purpose is to help impatient people have a better experience by giving them the illusion of control. Riders get to hit something to reduce stress without harming late arrivers. In addition, the doors will eventually close, so they get a feeling of accomplishment as well. Thus, our mental health is preserved without us knowing it was even influenced.