Comments on The Tommy Code: Story Points vs Hours

Hi Dan, thanks for your response! Do you not hav...

2011-10-20T12:03:55.498+02:00

Hi Dan, thanks for your response!

Do you not have to learn from each task? I doubt you'll be estimating wrong in a certain percentage for every task - so you can't just make the story points "longer". In some task you may have under estimated, in another over estimated and in a third spot on. How would you learn anything from just seeing that you were 35 % off in total and make your story points 35 % longer if you'd need to convert them to days?

I'm not trying to prove that story points are wrong at all, I'm just trying to understand... and I just can't! Hence all this blathering. :)

In my understanding of relative estimation, one of...

2011-10-19T11:08:53.583+02:00

In my understanding of relative estimation, one of the keys are that you need not to be "right about your estimates" (compare to your statement about being right about "three days" or not). Instead you try to be consistent, and let observation tell what multiplier to use if/when you want to convert to hours/days/weeks.

How do you learn when you said "three days" and it took four? Do you pick the task apart and analyze in detail, also accounting for disturbances. Or do you simply say - I should learn to add 35% on my estimates?

If the latter - you are already applying elements from relative estimation.