Most people don’t see modern art as art because it’s not something that everyone understands. There are several different Modern and Post-Modernist movements that have been circling the Art world. But to have a starter you need to understand the essence of time in these forms of arts and the presence or the absence of electronics. Most of us just take mobile, camera, tv, condoms and sanitary napkins for granted! 
What does one have to do with the other? well, everything has to do with everything. When we ridicule or think of modern art for the most part of history we forget that there could be multiple factors that are present and that are absent. Like for example when Leanardo Di Vinci was actively painting he never has cameras or video recorders and in order to preserve someone’s memory the only way for them was to create a death person painting when he was alive it’s like going to get a passport photograph in a mechanized photo booth or a PhotoStudio. They wanted to make people extremely precise and lifelike so that even if they are no longer around they would be able to see the painting and remember the good life or there smile.