yeah, well, we have to keep a certain amount of realism, otherwise the fiction gets abused and people begin defying every law of physics. It doesn't matter if it sucks. I've seen it where people dodge comets. They focus the entire thing on fiction and forget that if you are hit by a comet, your sheilds aren't going to do squat against the heat, force, and shockwave/explosion when it hits the ground. Not supposed to happen. You're more likely to be vaporized than survive.