system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why are artists like Van Gogh and Picasso famous? What makes great art great?

This is coming from someone with no education in art or art history beyond high school classes. I understand that art that's in museums takes a huge amount of talent. What I don't understand is what makes some of the most famous paintings/art pieces more celebrated than other works.

I'm also not that great at analyzing pieces of art. What is the meaning behind paintings like The Scream or Starry Night or the Mona Lisa? Why are those images so powerful?
gpt
A lot of famous art can only really be appreciated if you understand the time it was created in. In reality the Mona Lisa (for instance) is just a portrait of a woman. But if you see it in the context of the time it was created, it combined lots of different techniques that meant that it was a revolutionary and brilliant artwork when it was created.