The clown at a birthday party, a Broadway show, your friends fighting over the last potato chip–all of these are forms of entertainment. Entertaining is amusement and distraction; it can be as simple as a circus act or as complex as a stadium rock concert. Entertainment can also include movies, television, music, sports, books, poetry and other literature, and visual art. Entertainment often hits on themes that the human mind was evolved to react deeply to–backstabbing, murders and other social issues that were vital for survival in a complex society.