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Why do you think humans are so replusive and cringe to the noise of fingernails scratching on a chalkboard?
Asked by mass_pike4 (2096)
January 1st, 2010
I have looked into it a little bit and some theories are that the sound may have signaled a predator for our ancestors. Personally the noise does not get to me, but I know a lot of people who cringe when the sound is made. What are your thoughts?
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