This is really awesome. It looks hard, but it isn't. Here's a talk from 2007 that explains it well https://www.youtube.com/watch?v=wpOxbesRNBc https://www.youtu

This is really awesome. It looks hard, but it isn't. Here's a talk from 2007 that explains it well https://www.youtube.com/watch?v=wpOxbesRNBc https://www.youtube.com/watch?v=wpOxbesRNBc