There's this scene in Battlefield Earth that I really thought gave the movie some weight.
The blonde protagonist is trying to secretly read books, and alien overlord John Travolta finds out about it. You think he's gonna punish the blonde guy, but instead he drags him to a giant library and he says something to the effect of "when we took over your planet, all your armies with all their knowledge only lasted for 5 minutes before they were wiped out. So go ahead and read all the books you want, it won't help you."
I sorta liken that to a fighter studying endless tape of your opponent...sometimes if you're good enough, searching for weaknesses doesn't do jack shit.