From slide 33 in “What works in Software Development”:http://mungus.schwern.org/~schwern/talks/What_Works_In_Software_Development/What_Works/
Given a large task to estimate…
Break the task down into a complete set of smaller tasks.
Forces you to think deeper about what’s really involved
These smaller tasks are boolean. They are either done or not done.
There is no “85% done” with a mini-milestone.
Estimate those tasks.
Few minutes to half a day in length, max
If you think it will take longer, break it down into smaller pieces.
Add them together and that’s your estimate.
