1.Listen to part of a lecture in an art history class.
2.I'm sure you've all heard of the Mona Lisa, the famous painting by Leonardo Da Vinci.
3.The Mona Lisa is a portrait of a woman and it's thought to be the portrait of Lisa Gherardini but that's not certain.
4.In fact, many things about the Mona Lisa remain a mystery.
5.For example, we don't know exactly who commissioned the painting or how long Da Vinci worked on it and there are actually many scholars who think the mystery makes the painting more interesting.
6.I think it places unfortunate limits on our analyses, makes it hard to make strong arguments about the painting.