Another common source is delay and procrastination up front. First, a dev estimate is given of six months. Plan is made to ship in six months. Then, stakehol

Another common source is delay and procrastination up front. First, a dev estimate is given of six months. Plan is made to ship in six months. Then, stakeholders bicker for four months on whether, how, and when to actually do it. Then, dev gets started, being told that they already spent four months, so they should be done in two, according to the "initial estimate." Was it "debugging the development process" that called this out? Or "code complete" perhaps?