I spent many days watching the numerous videos at MOMA. One in particular was about how to paint like Picasso (in the style of cubism). Picasso’s approach to cubism tends to push and pull space with geometric shapes.
A side note: Picasso wasn’t the father of cubism. A french painter, George Braque, developed cubism. Although Picasso was a friend and rival of Braque, they were both inspired by Paul Cezanne.
Both were experienced artists, why did they both change momentum in their art career? Was it that photography was introduced in the beginning of the 19 century?
Did they feel there was a need to change realism painting due to photography?
After watching this video from MOMA I am getting closer to my answer. Here is a link to a 33 minute video.