This is the only video that ever explained it concisely and clearly, IF you don't care about trying to actually implement it: https://www.youtube.com/watch?v=YE

This is the only video that ever explained it concisely and clearly, IF you don't care about trying to actually implement it: https://www.youtube.com/watch?v=YEBfamv-_do https://www.youtube.com/watch?v=YEBfamv-_do