Strong Atheism starts from faith

[Tiberius]

Indeed, it may make more sense that things without evidence don't exist, but you can't prove it either way. There are many things in science that we didn't have evidence for, yet existed all along. Then, when we found the evidence for them, we accepted them as existing.

This doesn't mean that for all those years before, they didn't exist. You have to distinguish between absolute and relative claims. You can claim the relative to you, and possibly human knowledge, god does not exist. You cannot claim that this is absolutely the case though.

And yes, I would argue that every conceivable idea from science fiction has credibility. Ideas from science fiction are either extensions of current ideas, or ideas that violate our current understanding of reality. However, as science has repeatedly shown us, our understanding of reality is far from absolute. Thus both ideas that extend current ones, and ideas that seemingly violate our understanding of reality are both conceivable if our understanding of reality is wrong.

Science doesn't prove anything. Science just tells us how likely something is. It's never "impossible" and never "certain"; it's somewhere in between.