S, M, L estimate should not start with a date span
March 1, 2016
Many teams I visit nowadays have ditched story points and start to use Small, Medium and Large (aka T-shirt sizes) estimation instead. I like that.
But very often a smell is creeping into the estimation, removing the “relative” out of “relative estimation”.
Here’s how this problem will reveal itself. When someone suggests that you’ll use S, M and L for your estimates you will soon here:
Ok - so a S is 1-2 days, M 3-5 and L 5-10 then or what's the scale?
Don’t do that - it’s the wrong way around. In this post I’ll explain why and what is a better, more trustworthy, candid and transparent approach.
Why attaching day-span to the estimate is bad
Well, it’s quite obvious isn’t it; doing that (S = 1-2 days) is just giving “1-2” days another name. From that follows “resource-days”, then Gantt Schemes and the suffering...