The Empire State Building was built in only 410 days, on schedule and 18% under-budget even without computers to handle the schedule.
PERT, like the Waterfall Model, was never meant to be used in real life.
Just two of the lessons you’ll learn about management in Mary Poppendieck’s presentation The Tyranny of “The Plan” recently hosted on InfoQ.
I’m just lucky I’m not in a traditional project while watching the presentation. Hehehe…