Friday the 13th and other superstitions

POSTED: 09:30 AM PDT Jul 12, 2012 

Check out some of the most common superstitions -- including today, Friday the 13th.

Superstitions - Ladders
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Walking Under Ladders -- This superstition is said to arise from early Christian teachings that an object with three points represents the Holy Trinity. A ladder against a wall is seen as a triangle, and walking underneath it a sign of breaking the Holy Trinity.

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