FriggatriskaidekaphobiaPosted: May 13, 2011
In case you forgot—or in case you really didn’t want to be reminded—today is Friday the 13th. The Skeptic’s Dictionary has a fairly thorough description of the “morbid, irrational fear of Friday the 13th”:
If you base your belief on media attention, superstition about Friday the 13th might be the number one superstition in America today. It appears, however, that only about 10% of us believe that Friday the 13th is an unlucky day (Zusne and Jones 1989, p. 244, put the number at 7%; Vyse 2000, p. 18, cites a 1990 Gallup poll that put the number at 9%, and a 2000 survey by American Demographics put it at 13%). […]
There are several distinct reasons why certain days, numbers, colors, etc. are considered lucky or unlucky by different people or cultures, but the general reason for such superstitions seems to be to assert some sort of control and order over events that are essentially uncertain. Belief in lucky or unlucky things imposes purpose, design, meaning, and significance on otherwise indifferent and purposeless events. Confirmation bias assures that such superstitions will be supported by plenty of validating anecdotes.