> I don't think this time is wasted because in chasing those small efficiencies you will learn the high level patterns that lead to good enough code as well as

> I don't think this time is wasted because in chasing those small efficiencies you will learn the high level patterns that lead to good enough code as well as the evil of premature optimizations. How many times in your career has a PM agreed to make room in the backlog to prioritize performance work? It very rarely happens and the reason is that costumers rarely care. It's catnip for developers and I love doing it, but it's rarely something that matters enough