I've worked on teams that were poor at estimating. They used story points. I've worked on teams that were great at estimating. They used days. 1, 2, 3, 5, o

I've worked on teams that were poor at estimating. They used story points. I've worked on teams that were great at estimating. They used days. 1, 2, 3, 5, or 10 days. Smaller than a day - coalesce. Larger that 10 days - break it down. The difference was with points there did not seem to be any real impetus to improve estimation. It was too make believe. Also, if you asked a team mate what a point was, they might say an hour, a day, whatever. Sometimes this would cause unnecessary drama. With estimates in days, it was concrete, and concrete steps were taken as the team was forming to improve estimates. Also, minimum time of 1 day helped avoid the small stuff taking on too much importance.