i am in love with wall-e's girlfriend

Life is nothing but imperfection and the computer likes perfection, so we spent probably 90% of our time putting in all of the imperfections, whether it's in the design of something or just the unconscious stuff. How the camera lens works in [a real] housing is never perfect, and we tried to put those imperfections [into the virtual camera] so that everything looks like you're in familiar [live-action] territory.
Andrew Stanton

ps: http://money.cnn.com/2008/05/09/technology/siklos_walle.fortune/index.htm?postversion=2008051208