This person did not bring up the lack of proof for the claim unprompted, they responded to somebody asking about the truth of the statement: > So is this a lie

This person did not bring up the lack of proof for the claim unprompted, they responded to somebody asking about the truth of the statement: > So is this a lie? They were responding to this, and my interpretation of what they said is: "It doesn't appear to be a lie, but we do not know if is true, as somebody can be incorrect without lying".