But I wanted to find out why it was considered unlucky, and I found out that it was not because of the number 13, but because of the number 12.
Twelve is considered to be completeness. Here are some reasons why:
- 12 months of the year
- 12 signs of the zodiac
- 12 hours in a clock
- 12 tribes of Israel
- 12 Apostles of Jesus and
- 12 gods of Olympus
Just to show that people are overall pessimists. They should stress Friday the 12th as the lucky day, and not emphasize the 13th as the unlucky day. But that is just my perspective.