It's their job, but sometimes it's easier to argue or prove your point with some clear graphs and objective metrics. I see it as a tool to improve for developer

It's their job, but sometimes it's easier to argue or prove your point with some clear graphs and objective metrics. I see it as a tool to improve for developers and as an objective view of what really happened. Sure it helps managers do their jobs, but I think that in some cases we might not even need a manager at all.