Very often my readers complain about me saying that programmers must be in conflict with testers, or code reviewers in conflict with programmers, and so on. They claim that a good software team must have everybody going along and share the same set of objectives. They say that we should work "together," not against each other. I strongly disagree with that. I believe that good management means organizing conflicts and giving people explicit rules for resolving them. That's how quality can be achieved.

The video is here: https://youtu.be/DUWiy7fvVzk