Or is my brain to small ? Personally i don't like the field equations, because they are complicated. Richard Feynmann would say to this, if you don't like it go to another universe where the laws of nature are much simpler. But then again on sub-atomic level symmetry was a good guide ... e.g. hellman ... can someone comment... E.g. field equations in a planair world, a spherical world , a cilindrical world ?