The fastest quill is worthless if no one can read what it writes. Software has a remarkable ability to outlive the people who create it. A feature completed during a single sprint may continue serving customers for a decade. Entire engineering organizations evolve around systems whose original architects have long since moved on. New developers inherit the code, extend it, modernize it, and occasionally struggle against it without ever hearing the conversations that shaped its design. By the time software reaches maturity, its greatest challenge is rarely understanding what it does. The real challenge is understanding why thoughtful engineers decided it should behave that way. The software itself may remain…