It’s the first sprint planning meeting of the quarter and you’re leading a small team. It is determined that the first ticket on the board is an easy one and everyone agrees on the size of three points – something that should be knocked out in the next sprint.
Fast forward to the end of the quarter. That seemingly easy ticket took way longer than expected and the team has finally finished it. Other work has been stalled because this ticket took so long and the engineers are burnt out. During the retro, you try to understand why this took so much longer than expected.