From the linked wikipedia:
> However, enormous 95% confidence intervals (4–520 and 2–336, respectively) implied that specifying any one number is futile.
what’s more interesting about dunbar’s number is that it suggests a potential maximum for the size of an effective organization (say, 520) rather than pinpointing an optimum. the idea of a maximum like this appeals to intuition, so it’s worth studying more (and more quantitatively), but opposes ambition, which is probably why we don’t have plentiful research in this area already.
But it is misleading to expect an employee to maintain relationships with 150 people—they also have a family and friends.
https://en.m.wikipedia.org/wiki/Dunbar%27s_number