Today, I have been wishing so badly for a store that is always pitch black inside, and everyone wears night vision goggles while they shop. Then, even if you see someone you know, you won’t really know it’s them and they won’t know it’s you. Also, they could play some cool spy-vibe music. That might be exciting.
There was a psychology experiment that more or less did this in the 70s: http://www.stuartmcmillen.com/comics_en/deviance-in-the-dark/#page-1
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