A handy short definition of almost all science fiction might read: realistic speculation about possible future events, based solidly on adequate knowledge of the real world, past and present, and on a thorough understanding of the nature and significance of the scientific method.
Robert A. HeinleinEvery Congressman, every Senator knows precisely what causes inflation... but can't, [won't] support the drastic reforms to stop it [repeal of the Federal Reserve Act] because it could cost him his job.
Robert A. HeinleinHow anybody expects a man to stay in business with every two-bit wowser in the country claiming a veto over what we can say and can't say and what we can show and what we can't show - it's enough to make you throw up. The whole principle is wrong; it's like demanding that grown men live on skim milk because the baby can't eat steak.
Robert A. Heinlein