Protagonist is middle manager. Big project is comming. Boss calls meeting to estimate project. Protagonist meticulously collects all the outside view evidence beforehand. Meeting attendees give their estimates of all the steps and sum. He gives outside view estimate but is looked down upon. Guess who is right in the end?

Being right because you expected your team to do badly and work slowly doesn't make you look very good. In fiction we tend to see the opposite: someone is way more confident than they have any right to be, and they manage to pull it off (just barely) making themselves and their team-members look admirable.