Is the universe real?
What is real?
Is it a binary concept anyway?
or more like shades of grey?
could you test for it, since you are by definition entirely enclosed.
The line of thought, that our reality is sitting on top of another (realer) one is very old. It has gained popular currency with the recent Matrix film.
Deeeeeeeeeeeeep!

I want whatever you are smoking
I don't even know what to say to that one.
One thing that makes me laugh though, they say (whoever they is) is that if you have a computer powerful enough, you could simulate the universe as it is and predict everything that will ever happen.
Only problem with that,
It would have to simulate itself too.
It's be like that tv, plugged into a video camera recording itself forever and ever.