Architecture & practice·Estimation and planning
you sorted twelve ideas into small, medium and large in twenty minutes, which was all the decision needed.
T-shirt sizing
Also calledsmall medium large, coarse estimation
Deliberately coarse estimation used to compare options rather than schedule them. Its virtue is honesty about precision: at the stage where you are choosing what to do, the difference between three and five days is noise and the difference between a week and a quarter is the whole decision. It becomes a problem only when a large is later asked to become a date without any of the work in between.