"Children's finger-painting came under the arts, but movies didn't"

This quote by Nicolas Roeg is referring to the difference between what is considered art and what is not. He is recommending that finger-painting by children is thought about art, but films are not. This is most likely because finger-painting is viewed as an innovative expression of the person, while films are viewed as a kind of entertainment. Roeg is indicating that art is something that is developed by a private, which films are ruled out art because they are created by a team of people. He is suggesting that art is something that is personal and special, which movies are not since they are developed by a cumulative. Roeg is making a statement about the difference in between art and entertainment, and how they are viewed in society.