Quality or Quantity? And why 10,000 hours is wrong.

I don't know why I am making these lectures something triggered in my system now I think I have any expertise to make lectures like these. I guess I just write this to get ideas that are stuck in my head that I constantly think about; out of my head. Elevating stress by providing a reference for my future use, and why not make it public so that others may gain something from what I have learned.