Product quality has almost nothing to do with defects or their lack.
There are a million ways to lose a work day, but not even a single way to get one back.
The pathology of setting a deadline to the earliest articulable date essentially guarantees that the schedule will be missed.
The more you focus on control, the more likely you're working on a project that's striving to deliver something of relatively minor value.
The purpose of a team is not goal attainment but goal alignment.
If you find yourself concentrating on the technology rather than the sociology, you're like the vaudeville character who loses his keys on a dark street and looks for them on the adjacent street because, as he explains, "The light is better there."