Mine: People cannot completely disagree: or, we will always agree about at least one fact. Proof: Let's say we do not agree about anything. After thoroughly ex

Mine: People cannot completely disagree: or, we will always agree about at least one fact. Proof: Let's say we do not agree about anything. After thoroughly exploring our belief space and noticing this, we will have to agree that we do not agree on anything. So there you have it, a common belief. BTW, I am looking for prior art on this one. Any philosophy students around? I think it is related to Russel's Paradox. Any help in elucidating this would be apreciated. Hey, we could co-author the publication :-P