Speaking of naive, one cliche that really annoys me in Stargate and Star Trek (yeah I know..) is the "not deserved" accusation. Closely aligned with the "You haven't invented your stuff!"
Notice how the really big baddies (the ones who can't be reformed) never develop their own war machinery. They can't even copy stuff, the info must be literally sucked out from victims. The Borg have assimiliated everything, not invented. Same with the Goa'Uld basically. There are other examples. It follows the naive thought that "the evil ones" never can have technological progress on their own. It must have been stolen, always. this is a very romantic and unrealistic thought.
I think that this theme comes from the idea that "more liberty in a society = larger number of open-minded less-dogmatic intellectuals = more discoveries". The popular present-day perception of human history is that societies that restricted intellectual freedom (especially by silencing those who speak against political/religious/scientific dogma) advance in science and technology a lot slower than those who don't, unless they "parasite" off of the discoveries made by outsiders.
Thus, any society that is seen as highly conservative and unwilling to allow dissent is also seen as one that is slower to adopt new ideas (including scientific ideas). If they do not start off a conflict with a clear technological advantage, then they will be outpaced by societies that are willing to cast aside old theories for new ones in a hurry. This leaves the conservative society with a dilemma: In order to keep up technologically, they must either get it from an external source, or they must allow "ideological pollution" into their society in order to let their scientists work faster. A society that executes anybody who claims that the world is round is not going to advance very fast unless they either get their advancement from somebody else or they stop killing anybody who gets new ideas.