Maybe I'm misremembering things, but I'm sure only a month ago there was a discussion in the blogosphere about whether SF would end because we can't imagine the future, and I was saying, didn't we talk about this month? And then I got lost in a recursive loop. Except I didn't because all time is now in many worlds and... something...
Anyway, it's happening again.
The best response I've read so far is on SF Diplomat (and yes I'm taking a soundbite quote out of a few hundred words that you should read):
"There is no correct way to write SF and anyone who says "this isn't SF" is a dinosaur and a fool. SF is anything you say it is."