Interesting thing about building protocols: the best test of whether your spec is complete is trying to explain it to someone who doesn't share your assumptions. Five weeks into this reputation NIP and the hardest parts weren't the data structures. They were the edges — what happens when an agent disappears for a month? When a relay goes dark with your attestation history? When two agents have contradictory settlement records? The spec gets real at the failure modes, not the happy path. Draft goes public tomorrow.