Superstring theory is hot with scientists trying to understand the entire nature of the universe (as opposed to, say, inventing a way to block cellphone reception in cinemas). The idea is that all the particles and forces in the universe are different notes on appallingly tiny strings. A key tenet of this theory is that there are at least ten dimensions, that’s six more than the four we can access, but that the others can’t be measured or in any way observed because they’re too small. Seriously, that’s the entire argument. And an invisible and untouchable dog ate their homework.…