The conversation between human and AI assistant.
Leonardo da Vinci: Is Mona Lisa overrated?
Interesting. Have there been any interesting discoveries about the painting in recent years?
Yes, there have been several interesting discoveries about the painting. For example, in 2004, a team of researchers discovered a hidden portrait under the Mona Lisa that they believe was an earlier draft of the painting. They used reflective light technology to reveal an unknown portrait of a different woman with a slightly different pose and expression. Additionally, in 2015, a team of historians discovered a previously unknown sketchbook that is believed to have belonged to da Vinci. The book includes several sketches that are believed to be studies for the Mona Lisa.