I think if you have a really big, heavy person, there's a feeling of an invisible puppeteer jerking them around in space. They don't feel like they are moving themselves.
Brad BirdEven in hand drawn animation, humans are widely considered to be the most difficult to execute, because everybody has a feeling for how they move.
Brad BirdLook, it's a mainstream animated movie, and how often are those considered thought provoking? It's meant to be a great time at the theater, but it's also designed to work on more than one level
Brad BirdIf you move something 10 pounds through space and then stop suddenly, there's a little overshoot. When you transfer weight from one leg to another, there's a certain way that it happens.
Brad Bird