older witches hardly put words to it at all , but may suspect in their hearts that the universe really does n't know what the hell is going on and consists of a zillion trillion billion possibilities , and could become any one of them if a trained mind rigid with quantum certainty was inserted in the crack and twisted ; that , if you really had to make someone 's hat explode , all you needed to do was twist into that universe where a large number of hat molecules all decide at the same time to bounce off in different directions .