This! In the same vein, believing that "this time" the team will work faster because of lessons learned. Refusing to accept that historical performance really i

This! In the same vein, believing that "this time" the team will work faster because of lessons learned. Refusing to accept that historical performance really is the true performance of the team. Failing to account for the previous project completing almost on schedule only because of major overtime. Etc etc. On my first project I learned that every time a PM said the word "hope" (as in "I hope we can meet this deadline") that we were screwed. It was said a lot.