In the old waterfall days, product managers had to write very long and detailed requirements.

But even when we are working agile, many product managers spend too much time on managing the backlog and writing too detailed requirements, whether they call it PRDs, user stories, specifications or any other term.

Writing specifications and requirements should be a minimal task. Product managers should write as less as they can so they can spend more time on strategy, focusing the team, and making sure the product delivers the right value, while on the same time empowering development to come with new ideas.