Wow, I don't recall reading such levels of bullshit from my school textbooks.
I mean, I'm sure it was there, but not in such a blatant way.

It's kind of how when a [pick your sport] team is beating the hell out of their opponent, and then becomes over-confident in their abiltity to win the game. Reality can be a cruel, humbling, bitch to people who do that. :)