Did you know you can "learn" how to solve the Rubik's cube? it's some sort of logarithm. Heck when you buy the cube there are instructions to do it! and it's not hard.. well... The first two level is actually really easy to do. It's hard to explain but if you understand how it works the first low layers are easy.. it's the other two that I do not remember. And honestly, I memorized how to do the last two layers back in the day and never really "learned" it. But it's pretty awesome when I use to be able to finish it.
