Placebo buttons are buttons that actually do nothing except give the user an... ...computer-controlled traffic signals make the walk buttons at pedestrian crossings on heavily trafficked str... ...olete. By the late 1980s, most (but not all) walk ...http://www.neatorama.com/2010/02/09/why-do-people-push-placebo-buttons/
Why Do People Push Placebo Buttons?
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