Back to the future by far is one of the greatest films of all time. Aside from being so entertaining, it also has a profound message. If you think about it Marty came from a home where Mom was an alcoholic and Dad was a loser. We learn that Mom fell in love with Dad out of Pity when she brought him in after a car had hit him. But when Marty interferes with this meeting, Mom is now in love with him. When Marty finally fixes the problem, Dad ends up punching Biff out and rescuing Mom. Now she’s in love with him because of his courages act (a major difference then loving out of Pity. When Marty returns to the present time, Life is now better. His parents are now successful and in love. It goes to show you how one courages act can have a positive effect in your life.