In reply to Jeff Ross.

Thanks, Jeff. I take your point, hierarchies have always existed, but they have changed, as we can see in looking at how matriarchal societies functioned. My main intention was in questioning the need for hierarchies of learning specialists, so I should have been clear on that point.
Ref: https://www.brainpickings.org/2014/03/17/shlain-alphabet-goddess/