Ahab and the Carpenter — Moby-Dick

When you swap out something broken, the body and mind do not automatically update their records. A founder who gets a new business partner after a betrayal, an athlete fitted with a prosthetic after an amputation, a team that adopts new software after a system failure, all of them carry a ghost signal from the old arrangement. The replacement is real and functional, but the nervous system keeps sending messages to the missing part. If you do not plan for that overlap, you end up standing on solid new ground while your brain insists something is still wrong, and you cannot explain why.

Ahab comes to the carpenter not as a patient man but as a demanding one, and that is the tell. He tests the ivory leg in the vice, fires off a joke about Prometheus to dress his vulnerability in mythology, then pivots to philosophy about two legs sharing one soul. He is not confused. He is stalling. The phantom sensation is real and it unnerves him, so he converts it into riddles the carpenter cannot answer. The carpenter keeps filing. That is the mechanism: the proud person generates noise, the craftsman generates wood shavings, and the work gets done anyway while the unresolved feeling circles overhead.

Before you hand someone a replacement and call the problem solved, budget time for the overlap period. Tell them the ghost signal is normal and has a duration. The cost of skipping this step is what you see in Ahab, a man who cannot simply be grateful that he can stand again, because nobody warned him the old limb would still report for duty in his sleep. Name the phantom early, predict the ledger rage that follows, and let the carpenter finish the bone without turning the bench into a philosophy lecture.