All I can say is the big waterfall projects I was on pre-agile had excellent planning for the wrong things, and took up most of the time allocated for the proje

All I can say is the big waterfall projects I was on pre-agile had excellent planning for the wrong things, and took up most of the time allocated for the project. So we were out of time, the quality and people suffered. Another project was cancelled because we took so long planning, the company lost interest.