What is the scientific meaning of "undisputed evidence"? People are paychologically inclined to dispute, dismiss and deride things conflicting with their convi

What is the scientific meaning of "undisputed evidence"? People are paychologically inclined to dispute, dismiss and deride things conflicting with their convictions. The crucial point is, few are distinguishing between "sombeody is against this" and "somebody has a rational argument against it". Arguments do not count more just by many repeating them. That is, they shouldn't.