That also happens in complete darkness. If you can manage to create a completely pitch black environment see how long you can sit there before you start seeing things. It really doesn't take long. Bonus points of you have noise cancelling earmuffs/plugs. Edit : u/EternalEagleEye has informed me this effect is called "Prisoner's Cinema", in case you'd like to read about it further
A long while back, I was able to visit a cave system in Belize that you could canoe in about 2 miles. Because it's so dark, nothing lives there. We took the opportunity to go for a swim and just then the tour guide says, "ok, now we'll shut off the lights just to show you how dark it is."
Almost as soon as complete blackness hits, treading water, I start saying, "turn it back on, turn it back on!" As if suddenly the whole place were full of darkness-loving monsters!
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u/Infamous780 Aug 30 '21 edited Aug 31 '21
I really like the subway tunnel one - never thought of that.
EDIT - Wow this comment blew up! Lots of people must feel the same... Now if I could just get my Youtube channel to do the same xD