Visual supervision is a joke for development workers. Visual supervision is for prisoners.
The purpose of a team is not goal attainment but goal alignment.
Product quality has almost nothing to do with defects or their lack.
The fundamental response to change is not logical, but emotional.
The pathology of setting a deadline to the earliest articulable date essentially guarantees that the schedule will be missed.
Some of the most flowery praise you hear on the subject of teams is only hypocrisy. Managers learn to talk a good game about teams even when they're secretly threatened by the whole concept.