Theories of Chaos, where the very fabric of reality is torn asunder by the whimsy of the cosmos.
Some of the most popular theories of this ilk include:
And don't even get us started on the Multiverse Mayhem that ensues.
But be warned, dear seeker of knowledge, the further in you go, the more your mind will be fluxed into madness.
So, at your own risk, proceed with caution, or leap into the abyss.