Music, art and theater can all show how life is around you. They can express the bad things in your culture, and they can also show the good things. A painting can show the brutality of a war. A song can explain what's good about a certain area. A play can tell you about the hardships a certain culture goes through. The arts can help teach people about their own culture, or about others'.
This may mean that the person in the future will not be able to understand or comprehend what a person is saying to them, if they do not listen to them now.......hopefully this helps