The feeling persists that no one can simultaneously be a respectable writer and understand how a refrigerator works, just as no gentleman wears a brown suit in the city. Colleges may be to blame. English majors are encouraged, I know, to hate chemistry and physics, and to be proud because they are not dull and creepy and humorless and war-oriented like the engineers across the quad. And our most impressive critics have commonly been such English majors, and they are squeamish about technology to this very day. So it is natural for them to despise science fiction.