Comments by "Peter Lund" (@peterfireflylund) on "The Medieval Invention That Changed The Course Of History | The Machine That Made Us | Timeline" video.

  1.  MichaelKingsfordGray  they were rubbing, not printing. That’s one reason why the quality of Chinese “printing” was so low.
    3
  2. He might just have meant “South(ish)”.
    1