Ask five engineering leaders to define productivity and you'll get five different answers. Story points closed. Deployment frequency. Lines of code (please, no). Features shipped. "I just know it when I see it." That vagueness isn't a personal failing it's a symptom of trying to measure something that was never really one thing to begin with. Some of the best writing on this topic has been refreshingly honest about that ambiguity. A well-known informal definition frames it si
