Originally posted by Palynka
I'm curious as to how you define sci-fi.
Well maybe you've got me there. If the main story of the movie/play/book is not dependent on (currently) fictional science it's not IMO sci-fi. Avatar's main story is the beleaguered, noble, nature-loving tribe against the industrial destroyers. That could even be a documentary. How what's-his-name got injected into that world, or how it got enacted in his mind, is secondary to the plot.
So it's fair to ask for an example of sci-fi. Basically, all dramas have to do with someone being put up a tree and getting them down. But I've read that sci-fi explores the effects of a scientific fact that is different that what we think is such, on people. I suppose an example would be if someone developed a drug that stopped aging at say, 18. It would still involve people up a tree, but the fictional science would be central. I didn't see the fictional science being central in Avatar.
I remember reading a pulp sci-fi story called Brain Wave. I had a copy for a while. I think it's a good example.
http://en.wikipedia.org/wiki/Brain_Wave
"At the end of the Cretaceous period the Earth moved into an energy dampening field in space. As long as Earth was in this field all conductors became more insulating. As a result almost all of the life on Earth with neurons died off, causing the Cretaceous-Tertiary extinction event. The ones that survived passed on their genes for sufficiently capable neurons to deal with the new circumstance. Now in modern times the Earth suddenly moves out of the field. Within weeks all animal life on earth becomes about 5 times as intelligent. The novel goes through the triumphs and tribulations of various people and non-human animals and groups on earth after this event."