Michael Wolfe avatar Michael Wolfe

Why are software development task estimations regularly off by a factor of 2-3?

Screenshot of “Why are software development task estimations regularly off by a factor of 2-3?”

I have never found a better analogy to show the systematic difficulty in providing software estimates, which are frequently wrong:

Man, this is slow going! Sand, water, stairs, creeks, angry sea lions! We are walking at most 2 miles per hour, half as fast as we wanted. We can either start walking 20 hours per day, or we can push our friends out another week. OK, let's split the difference: we'll walk 12 hours per day and push our friends out til the following weekend. We call them and delay dinner until the following Sunday. They are a little peeved but say OK, we'll see you then.


  1. screenshot of Fulfilling the promise of CI/CD

    Charity Majors avatar Charity Majors

    Fulfilling the promise of CI/CD

    This may surprise you, but continuous deployment is far and away the easiest way to write, ship, and run code in production. This is the counterintuitive truth about software: making lots of little changes swiftly is infinitely easier than making a few bulky changes slowly.