Alright, I want a good, clean fight. Simply state your side, your argument/counter-argument/comment and whatnot. I'm not trying to troll this, just wanting a good debate, so let's have one. (Atheist by the way)
that makes no sense at all to me. it's like saying you can't say 'billy isn't in this room' unless billy is actually in the room. actual existence isn't a prerequisite for an argument against that things existence. i would think the just very idea something existed (invisible pink unicorn, for instance) and the lack of evidence then for that thing would be grounds enough to pose the question.