A Si Fi watchmaker.

[One Above All]

In science there is a way to "imagine" and then there is fantasy.

In sci-fi, the two are joined together. Amazing, isn't it?

Saying "I don't know" and even "imagining" the possibilities still even at that level are subject to rules and issues of likelihood.

Not when you're talking about fiction.
In sci-fi, you combine the possible (sci - humans being born with genetic mutations that give them abilities others do not have, like seeing and hearing outside the normal spectrum) with the impossible (fi - those abilities include flight, weather manipulation, and eyes that serve as portals to another universe) to create something that people will like (X-Men). You take what could be (sci - "actual" space travel) with what can't be (fi - using black holes) and create a masterpiece (Event Horizon). It's called "suspension of disbelief". Learn it, so you can learn how to enjoy sci-fi. Or don't, and keep your mouth shut about what you don't understand instead of making shit up - id est, fantasizing. We sci-fi fans have a hard enough time explaining that our discussions are hypothetical in nature without you polluting them with your lack of imagination.

EDIT: I take it you're not a LotR or HP fan. I take it you don't read comic books or watch TV (besides the news and sports, anyway). I take it you don't play games (aside from chess, checkers, various types of solitaires, poker, and everything that doesn't require you to accept the impossible). If I am correct in this, you are a sad, sad person. If I'm incorrect, you're just a sad hypocrite (which is one less "sad" than the alternative, but still one more "sad" than I'd like).