I found this movie to be terribly boring and kept falling asleep trying to sit through it. The premise is ridiculous on every level and they try to make it seem clever by not explaining anything.

The reason trippy things happen when you dream is because the brain is operating at such a low level that simple logic and common sense are not possible. Its not possible to deal with layers of complexity of the dreams within dreams, the visual world itself is well beyond the comprehension of an unconscious brain. Quite simply if your brains awake enough to deal with this world then you are very awake.

Though the stupidest part is entering other peoples dreams by lying down next to them....i found that interesting...

Even the thing about the chick from Juno being the architect and she wasn't even gonna go in with them. The premise appeared one of them would control/create the world from within the dream world which was meant to be her, yet she wasn't gonna be there...

Worst big budget movie I've seen although I just saw Prometheus and that was pretty bad.