A friend of mine sent me this story. It's great! 

When you are in the middle of a mosh pit, anything can happen. People are unpredictable.. or not. A group of scientists studied videos of mosh pits and discovered that you can predict how a chaotic crowd will move. 

You can mess with a bunch of factors, like size of the venue, how loud the music is, etc. You can see how people react. It gives you an overwhelming false sense of power.

MOSH PIT SIMULATOR