The human brain is very advanced and works in mysterious ways. It changes the most during adolescence and causes the behaviors that teenagers do. Which can make one wonder, what is going in someones head? Like Holden Caulfield in The Catcher and the Rye. He acts sort of strange just as an attempt to find his identity and who he really is. Teenagers think so much differently than adults simply because they are just learning, learning about life and the world. Every change somebody goes to makes them adapt, and really choose who they are and who they want to be.