The point of Schrödinger’s experiment was to show that the act of observing changes the outcome, or rather, causes an outcome to happen. Likewise, you can’t go into a team and not change the behavior of that team by being around them, sitting in their meetings, and watching their standups. Your presence changes the team’s behavior and may hide the problem you’re trying to find, in the same way that a log statement can cause a concurrency issue to be magically erased, at least for some time.
