Exactly.
But if I'm expecting cerebral sci-fi, I have high standards for everything being tight and thought out. With those expectations in mind, I found Inception pretty dumb. It makes me wish I'd seen it without hearing all the hype first.
But at least it was better than Looper.
I suspect the rarity of filmmakers with talent at the level of, say, Cocteau, drags down the standards of what people are able to comprehend as truly cerebral.
The masterpiece of The Dark Knight was the same thing, except that the emotion was horror: each of the Joker's little atrocities kept building up and building up until the last one was so large that he didn't even need to be on screen anymore.
That's Nolan's trade mark. He uses callbacks and repetition to mount emotion.
I really, really didn't get why so many people on the net didn't get it, or thought it was really complicated !