Curious if there has ever been a society where no one was in power. It seems human nature dictates there will always be those who would enlist others to create a base of power. This would be furthered by the fact we are not equal in ability nor intentions, and those who excel at certain ways would by the authority of their expertise become the power of those structures.
A lot of anarchists say all hierarchy is bad by default. I would instead suggest that the key point is consent versus coercion. People have different skills, time preferences, value scales, etc. and find ways to organize and cooperate. Politics is not a manifestation of this process, though.
"Authority" is one word used for two disparate concepts: expertise and bullying. That causes a lot of confusion (probably, intentionally). I will listen to experts, and they won't try to force me to follow them. But political "authority" is The Most Dangerous Superstition and it can...
And, here are my thoughts on hierarchy: Hierarchy