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from Mental Floss

Do you believe in superstitions? A recent study reveals that our perception of our actions following perceived bad luck may keep the negative event from occurring.


Knocking On Wood Knocking on wood, or simply saying "knock on wood" after making a hopeful statement, is rooted in the idea that you’re tempting fate by acknowledging your good fortune. The expression comes from the ancient belief that good spirits lived in trees, so by knocking on something wooden, a person was calling on the spirits for protection.