1) Individual reality - My own experience must actually be happening, or else I would not be experiencing it at all.
2) beyond-universal uncertainty. Assuming that what I perceive is not merely an illusion, what IS beyond what I can perceive? In other words, what is outside the universe? Does the fact that I cannot perceive it make it not exist at all? Or does it mean that anything and everything exists outside the universe?
I feel like Schroedinger's cat must feel, wondering exactly what is outside the box. Not to mention forever fearful of the uncertainty of living in a box where a poison could be released at any moment without warning... (Hmm that gets me thinking... *Crackpot theory #43 - The universe is a schroedinger's cat-style box, from which no information can be gathered from the outside apart from what it was constructed from.*)
These two ideas have not been strictly proven but my mind is very logical and they have been arrived at through much thought.
By all means go ahead and tell me your point of view, or even that I'm just plain wrong.