Animation is about acting - sometimes comedy, always emotions. Like acting it is hard to specify the desired end state and harder still to identify the decision

Animation is about acting - sometimes comedy, always emotions. Like acting it is hard to specify the desired end state and harder still to identify the decisions and actions required to achieve it. "She needs to look more nurturing" or "that ocean wave needs to look more aggressive (but not malicious)" are legitimate things a Director might say to an animator. Machine Learning can already make an image walk. The trick is making it walk in a way that the audience will connect with emotionally in that moment.