Though we could learn to accept we are the universe as we perceive it, we still have ceartain patterns which have become raw instinct within our nature and are apparent in all beings, so even saying we are dependent of our entity we are possibly all the same form of creators of our existance because there is an outside entity that without it we become the opposite of omnipotent; we fall in an oblivion of selfvalue.
How is it we exist even if there is nobody there to be aware of us? In the same manner, if a tree falls in the middle of the forest and there is no one around to listen, does it make a sound?
thantounderscore
There is a specific part of our brain that controls our sense of separation from the universe. Damage to this part of the brain or intense meditation results in a sense of one-ness with the universe. So, yes, meditating monk or brain damaged person may feel that he/she is the universe around him/her, but the reality is not so. We are not the universe we perceive. If we were, there would be no surprise.
Additionally, we would also never doubt or have reason to doubt our senses, but we do. I'll give you a little mental exercise to explain: suppose you are walking home from the store, and you see a tyrannosaurus rex walking around, eating people, smashing cars, and all around making a big ruckus. You run home so as to avoid being eaten/destroyed by the tyrannosaurus rex. And, as any normal person would, you turn on the telly to see what's going on. No news coverage. You walk back outside to where the tyrannosaurus was. No dino prints. Buildings are fine, no damaged cars, people milling about as normal. As if nothing happened. What would you think of your perceptions at that point?
Kwing
I'm not saying that we're not individuals. We are each (literally) in our own world, and our only connection to others is by the people themselves, who are like windows into our existence. Because we can still interact, surprise can still come from other people, which builds to our universe. If you met a stunning woman, you might say she "came into your life". The same goes for anything else that could surprise you.
As for your second paragraph, when I said we live in a world in which we are always right, I phrased it like that quite carefully. We don't live in a world in which we always will be right; we live in a world in which we ARE right. Our universe changes constantly, and is always growing. Every time we learn something, our universe expands.
Next, your t-rex story seems to agree with what I'm saying. If I were the person involved in the situation, I'd think I was hallucinogenic. Someone who has schizophrenia or hallucinates is commonly thought to live in their own world, and a pretty unstable and dangerous world at that.