The guiding principle of the universe is symmetry, in the sense that all natural laws are symmetry laws. Another guiding principle is simplicity. That does however not imply that Nature itself is "simple" at a fundamental scale, on the contrary: More degrees of liberty conduces to complication to such extreme that it is ... random. Random means complicated. This is the punch line of Random Dynamics, a theory developed by Holger Bech Nielsen at the Bohr Institute. Unlike the Grand Unification scheme, in the Random Dynamics approach the natural laws are expected to get more complicated at higher energy. It is only by the formulation "the fundamental world machinery is essentially random" that the Random Dynamics model is simple. If one would formulate the details of the "laws", it would be exceedingly complicated! The ambition of Random Dynamics is to "derive" all the known physical laws as an unavoidable consequence of a random fundamental "world machinery".
The latest idea is that the future "tries" to change the present in order to avoid the creation of a new - unnatural - particle. Interesting.