Managers have five important core responsibilities, which everyone in our industry tends to agree on. In no particular order, we can summarize them as
Most people appear to agree that in order for a manager to meet these responsibilities, the maximum team size under which that is realistically possible is about 10. Frequently, particular in organizations that pride themselves on their “flatness”, that team size is routinely exceeded.
This is unspeakably, ludicrously wrong, and runs a high risk of manager burnout and team failure.
This talk makes a case for a maximum team size of 5.