Tons. Science Fiction has been described as the genre of ideas. Every story has some idea at its core (or at least should).

Click the link to see how to come up with your own ideas.

Fiction can make an excellent medium for introducing and advancing political ideas because it opens the minds of readers to possibilities they may never have thought of.

No, one cannot get "stuck" in a dream. Such ideas are science fiction and fantasy.

It is science fiction. Science fiction generally bases a fictional story about a

debatable scientific point like time travel, aliens and other disputed ideas.

Reginald Bretnor has written:

'The magazine of fantasy and science fiction' -- subject(s): American Science fiction, American Fantasy fiction

'Of Force and Violence and Other Imponderables' -- subject(s): Political ethics, Violence, War

'Schimmelhorn's Gold'

'Modern science fiction'

'Gilpin's Space' -- subject(s): Space and time, Fiction

'The Craft of science fiction' -- subject(s): Science fiction, Authorship, Creative writing