[linear]

You just asked him to prove a negative. Can you prove you aren’t a space alien in disguise? Didn’t think so.

[TigersEye]

That is not asking him to prove a negative. He claimed those things were knowns. That is a positive. I asked for his source.

[RobRoy]

>>Can you prove you aren’t a space alien in disguise?<<

I can’t prove that, but in my case it is because that is exactly what I am.

But I can’t prove that either. ;)