4 Ball Mills Mess
After 3 ball mills mess was created, it was difficult to imagine a four-ball version of it. But, with the invention of siteswap notation, it became much more possible for unknown tricks to be imagined and 4 ball mills mess was created soon afterwards. It takes the same hand movement as a 3 ball mills mess, but each throw goes back to its original hand. While more difficult to do - the leap from 3 to 4 ball mills mess is not as large as one may think.