In a movie, a book, or a play, a character doesn't live in a vacuum. She is subject to pressures from the world outside of her, just like we are in life. These pressures and circumstances shape character. Who your parents are determines your genetic make up: your skin color, your sex, your height, weight. Where you are raised does affect your worldview either positively or negatively, your accent. Your economic class affects where you go to school, what you eat, where you sleep.