Yeah... I don't think most of these things were made because of nothing but ignorance, just pretty much so the movie isn't boring. How fun would it be if jedis couldnt dodge/deflect the blasters, or if in space it'd be like a silent movie and no lasers would seem like they're being fired. It'd look like the crappiest movie in the world, and I'm sure for star trek, if you made completely weird looking aliens, it would of looked cheesy.