We're taught that people were generally stupid until the 16th
  Century or so. But Michaelangelo was taught in a school in Italy
  run by expatriot Greeks who STILL HAD all the ancient Greek
  philosophers and knowledge - they never lost it. They just
  couldn't build any more because of the Ottoman empire. So they
  taught the dumb Western Europeans who were like, "woah, cool,
  mind=blown - I'm gonna draw a helicopter now :P " "