If you give a damn about the quality of the work at all, every other sentence means a pause for research. You write the word “steel” and then you have to stop, and wonder: “Is steel strong enough to do this? Wouldn’t they have something better than steel in the future? Where is the future of the steel industry heading?” Six hours later, you’re Googling “hardened mesh weaves” and “nano-tubes” just to finish the sentence: “Biff Largeblaster’s sculpted cyborg abs glistened in the afterglow of the imploding time-vortex like a gargantuan bunch of manly ____ grapes.
-Robert Brockway, on why writing Science Fiction is a little more involved than unleashing the limitless power of your imagination, from How to Become an Author in Five Incredibly Difficult Steps