Was da Vinci an artistic genius? Sure, but he was also born in the right place at the right time -- pre-Renaissance, Western artists got little individual credit for their work. And in many non-Western cultures, traditional forms have always been prized over innovation. So, where do we get our notions of art vs. craft? Laura Morelli traces the history of how we assign value to the visual arts. Lesson by Laura Morelli, animation by Sandro Katamashvili.