Reminds me of an article I read once about modeling software engineering estimation. The best model they found was to think of software engineering as a Russia

Reminds me of an article I read once about modeling software engineering estimation. The best model they found was to think of software engineering as a Russian nesting doll. You are opening a box, which takes time. Inside that box might be your goal or it might be another box. Every box takes some amount of time, but you don't know how many boxes you have to go through before you finish.