Ever wonder why your headphones always seem to get tangled in your pocket? The only plausible explanation that you can think of is pocket gnomes, but consider the following....
1. There is only one way your headphones can be untangled
2. But there is an almost infinite number of ways they can form in knots
This is known as the knot theory. Basically it is almost impossible that knots wont form in your pockets. A small movement or even a slight change in temperature can cause a knot to form. The one way you can stop your headphones from knotting is by restricting their motion.
sorry for any grammar errors just wanted to summarize something i learned today for funnyjunk.