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Do Crosswalk and "Close Door" Buttons Really Do Anything?

   
        Shows | Podcasts
Do crosswalk buttons work? Technophile82/Thinkstock
Do crosswalk buttons work? Technophile82/Thinkstock

Are the buttons we push to cross streets, close elevator doors, and nudge the office thermostat really connected to anything? Some aren’t! Learn how these placebo buttons (don’t) work.