One never truly know where some think came from if it was not within the life time of those who wrote history, and those who rewrite history as time progresses. That could have political implications then and now. But like all journeys they and (i assume) this must have been inspired.
I have had male and female teachers in my lifetime and they were not the first teachers but for me they were.
Does that then mean that if you were from one or the other sex you could not relay their teachings?
Todays Google fact