Evidence is great, Steve, if ya can find it. I always look first for the evidence. Sometimes it is very hard to find, though. Sometimes I don't know how to find it...or where? Sometimes there is no evidence available. This does not prove that a given proposition which is lacking evidence is wrong...and it don't prove that it's right either. It just remains as a hyothetical proposition in that case. It remains a matter of opinion or conjecture. Not proven right. Not proven wrong either.

Which was the whole point of my post if you'd care to review it. And scientists neither claim proof nor ask for it. If you see one doing either, they are not scientists. Asking for evidence is not asking for proof, nor is it saying that the other guy's notion is wrong. It's just asking for evidence, that's all.