Mediocre thriller that gets too wrapped up in its own rules to really care what happens. Yes, I was able to follow the convoluted layers and i knew exactly where I was - dream, dream within a dream, not dream, not dream within a dream, etc., etc., etc. I did find myself dreaming, or more correctly, snoozing in the middle when I could care less what dream level we had to get to or else! maybe we wouldn't get out. Puhleeze! And I like Nolan's other movies.