Thus, why I asked the person above how they are "certain" of a thing. Seems like a double standard. Person above makes a claim with nothing to back it, I count

Thus, why I asked the person above how they are "certain" of a thing. Seems like a double standard. Person above makes a claim with nothing to back it, I counter the claim with an actual cite. Everyone jumps on me instead of them, for, providing anything at all?