Sometimes, the stuff the screenwriters originally came up with was so gloriously insane that it almost would have resulted in a different movie. A somewhat sexier, slightly longer, much wronger one.
It's ironic that some of the coolest special effects in famous big-budget Hollywood movies were done with stuff you could go out and buy right now without going bankrupt.
Sometimes cutting scenes can save a movie from epic stupidity. And sometimes cutting scenes can save these films from plunging into a bottomless hole of sadness.
Just like in the real world, these fanciful Hollywood inventions would have terrible unforeseen consequences that would make living in a sci-fi universe a waking nightmare.
