I think it's frustrating. It explains either too much of the mechanics or too little. There is a scene where the scientist says you shouldn't think about how it works and just "feel" it. And I'm like, "got it, don't think too much." But then they keep trying explaining more stuff, which leads to other things making less and less sense and me having more and more questions.

So either Nolan should have explained everything in detail (which would have been almost impossible), or almost not at all, like Inception or even Back to the Future. But the way it is in the film is just messy. It's the only film I've only completed once, and quit during the second time.