Like the hero of that film, the viewer of “Inception” is adrift in time and experience. We can never even be quite sure what the relationship between dream time and real time is. The hero explains that you can never remember the beginning of a dream, and that dreams that seem to cover hours may only last a short time. Yes, but you don’t know that when you’re dreaming. And what if you’re inside another man’s dream? How does your dream time synch with his? What do you really know?

Cobb also goes to touch base with his father-in-law Miles (Michael Caine), who knows what he does and how he does it. These days Michael Caine need only appear on a screen and we assume he’s wiser than any of the other characters. It’s a gift

Nolan helps us with an emotional thread. The reason Cobb is motivated to risk the dangers of inception is because of grief and guilt involving his wife Mal (Marion Cotillard), and their two children. More I will not (in a way, cannot) say. Cotillard beautifully embodies the wife in an idealized way. Whether we are seeing Cobb’s memories or his dreams is difficult to say–even, literally, in the last shot

“Inception” does a difficult thing. It is wholly original, cut from new cloth, and yet structured with action movie basics so it feels like it makes more sense than (quite possibly) it does.

I thought there was a hole in “Memento:” How does a man with short-term memory loss remember he has short-term memory loss? Maybe there’s a hole in “Inception” too, but I can’t find it. Christopher Nolan reinvented “Batman.” This time he isn’t reinventing anything. Yet few directors will attempt to recycle “Inception.” I think when Nolan left the labyrinth, he threw away the map.