alter our perception of the world around us.

The only thing worth writing about is people. People. Human beings. Men and women whose individuality must be created, line by line, insight by insight. If you do not do it, the story is a failure. [...] There is no nobler chore in the universe than holding up the mirror of reality and turning it slightly, so we have a new and different perception of the commonplace, the everyday, the “normal,” the obvious. People are reflected in the glass. The fantasy situation into which you thrust them is the mirror itself. And what we are shown should illuminate and alter our perception of the world around us. Failing that, you have failed totally.

HARLAN ELLISON