Anyone know the physiology behind the reaction that people have to fingernails on a blackboard?
Question:
Answers:
One idea: Fingernails-on-blackboard: it sounds exactly like the destruction of tooth enamel. We're instinctively programmed to respond instantly.
It's the sound of body damage; but it's a particular type of body damage for which there is no pain .yet no healing.
Other Answers:
they don't like the sound it makes
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