Grownups are reluctant to take science fiction seriously, and with good
reason: sci-fi is a hormonal activity, not a literary one.  Its traditional
concerns are all pubescent.  Secondary sexual characteristics are everywhere,
disguised.  Aliens have tentacles.  Telepathy allows you to have sex without
any nasty inconvenience of touching.  Womblike spaceships provide balanced
meals.  No one ever has to grow old -- body parts are replaceable, like
Job's daughters, and if you're lucky you can become a robot.  As for the
adult world, it's simply not there; political systems tend to be naively
authoritarian (there are more lords in science fiction than on public
television) and are often ruled by young boys on quests.  The most popular
sci-fi book in years, Frank Herbert's Dune, sold millions of copies by
combining all these themes: it ends with its adolescent hero conquering the
universe while straddling a giant worm.
		-- Arnold Klein