Well, if we are talking about theoretical possibilities beyond current laws of physics, then the possibilities literally are endless. For that reason I do find it incredible that some people think they know the answer to what created these laws (well, and everything else in this world) in the first place. I mean, what are the odds of being correct when the number of options are infinite?
Yeah... I'll just settle with not knowing or claiming to know the answer. That way I know I won't choose the wrong answer and make false conclusions.