10 ms·
Along these lines: placebo buttons, e.g. walk buttons at crosswalks, elevator door close buttons http://en.wikipedia.org/wiki/Placebo_button http://en.wikipedi
by tqs 14y ago
Along these lines: placebo buttons, e.g. walk buttons at crosswalks, elevator door close buttons
http://en.wikipedia.org/wiki/Placebo_button http://en.wikipedia.org/wiki/Placebo_button