Paul Graham - You Weren't Meant to Have a Boss:
"A group of 10 people within a large organization is a kind of fake tribe. The number of people you interact with is about right. But something is missing: individual initiative. Tribes of hunter-gatherers have more freedom. The leaders have a little more power than other members of the tribe, but they don't generally tell them what to do and when the way a boss can.
It's not your boss's fault. The real problem is that in the group above you in the hierarchy, your entire group is one virtual person. Your boss is just the way that constraint is imparted to you."