I'd always been a cartoonist, [but] I leaned towards architecture because I didn't know you could make a living being an animator. In architecture, with all these building codes, all these historical codes, you start to realize how restrictive an art it really is - and for good reason. Because if the building falls down, someone gets hurt, that's a career-ender right there. No one's going to sue me if they don't have a good experience watching a film.