A lot of people describe a product manager as a CEO of the product or the “owner” of the spec, but I think that over-ascribes influence and authority to the product manager. The best teams operate in a way where the team collectively feels ownership over the spec and everyone has had input and been able to suggest and promote ideas. The best product managers coordinate the key decisions by getting input from all team members and are responsible to surface disagreements, occasionally break ties, and gather consensus (or at least ensure that everyone commits to a plan) when decisions get made. It’s not about building what the product manager thinks is right. This isn’t to say that product managers shouldn’t have great ideas of their own, but the goal is not to find a team that executes on their ideas blindly. Instead, the best product managers build a process to collaboratively decide on the right priorities so the whole team is bought in.