My brother, Larry Haavik, is a fine musician who defines music as an “adventure for the ear.” I recently attended his two lectures on the history of jazz. He talked about how from the earliest times, people have used sticks, animal skins and other materials to make music, gradually expanding and transforming their repertoire as they sought new sounds and new adventures for the ear. Exploring Longer scales, more beats per measure, unusual instruments, different rhythms, and other variations all contribute.
The same, of course, applies to art as painters seek new ways to paint the world and people around them. We can easily see how photography made realistic interpretations boring. The artist seeking new adventures in paint moved on to impressionism, expressionism, and so on to explore new ways of presenting the world around them.