Knowing: 6 out of 10.
Some reviewers I know and trust loved this film, so my expectations were a little higher than they'd normally be for a Nick Cage sci fi movie. It's not a bad movie. In fact, it's kind of neat in spots, and practically thought provoking, but it's still a six. A six dressed as a nine, perhaps, but still a six.
I'd like to make a list of films in which we witness the destruction of New York City. Off the top of my head, I can think of about a dozen.