Entertaiment is the most common form of human entertainment. It is found in all cultures of the world. Throughout the history of humanity, it has been used as a tool to educate, uplift and inspire. It is also a source of pleasure, joy and can be an outlet for anger and frustration. Entertainment stimulates the brain to realease seratonin and dopamine, a chemical that makes humans feel good. Entertainment often hits on points that humans were evolved to react deeply to, such as backstabbing, murders and other social themes. It can help to understand the human society. This is why many people enjoy entertainment.