Why when you close your eyes in the shower when shampooing your brain makes you think that there is something scary behind you and you want to open your eyes as soon possible?
In: Biology
Well, that’s a very specific example, but broadly it’s because we’ve evolved with a sense of fear. Fear is often either selected for or at least not against when it comes to evolution (outside extreme cases). From a survival standpoint, it’s better to hear a twig snap and suspect a lion than to assume the wind. You often risk little by assuming danger as compared to assuming safety. Those with a touch of paranoia about them are more likely to live long enough to pass on their genetics than those with no fear.
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