Boy, that never occurred to me, but you're right that there is more than a passing resemblance in plot structure. At the same time, I find it hard to believe that a Hollywood type would push it for that reason. It's not like Fight Club was a big hit or anything.

I went to see A Beautiful Mind in hopes that there would be more math in it than there was (although there was more than I had expected), to see Russell Crowe, who is a fine actor, and to see Jennifer Connelly, who is fine. On the other hand, Ron Howard is a greatly overrated director, and Akiva Goldsman may be one of the worst screenwriters ever. (I know he won an Oscar for A Beautiful Mind, but that doesn't mean that it was actually good.)