13

If there’s one thing we all absolutely adore, it’s superstition; even if it isn’t our own creation. If a lot of people seem to believe it, then it must be true. The lack of logic just gives it some mystique. Everyone could use some mystique, right?

It is courtesy our charming ways and beliefs that many buildings don’t have a 13^th floor. They call it the 14^th floor instead. As if poor counting will negate bad luck. Apparently two wrongs do make a right. The number 13 being unlucky is an old Christian belief but it seems to have found resonance across cultures. My research informs me that there’s actually a word for it: triskaidekaphobia. 

It’s quite interesting to me that an arbitrary set of beliefs can affect outcomes. People believe 13 is unlucky and so very few of them are willing to buy a house or an office on the 13^th floor. This  causes prices and/or the probability of sale to fall, thereby ensuring that the number becomes unlucky for real estate developers merely because enough buyers believe it to be. So people choose to drop poor 13 from the number system altogether. Self-fulfilling prophecies don’t get any stranger than this.

I must consult a numerologist about the importance of lowest common multiples and highest common factors in arriving at decisions about how lucky a number is. Are multiples of 13 also unlucky? Would people be all right with living on the 26^th floor or is that twice as unlucky as 13? The problem with detecting self-fulfilling prophecies that are irrational is that you don’t gain any predictive power from such knowledge.