Triscaidekaphobia

Triscaidekaphobia is fear of the number 13. The origin of this peculiar phobia can be in the bible or in the nordic mythology. In both cases, they relate the number 12 to gods, perfection and good things; and the number 13 to misfortunes. Because of this, many planes don't have row 13, they pass from row 12 to row 14. Some of them also drop row 17 because Italians consider it as a number that brings bad luck.