The thing about animation is that it's a constantly changing process. They talk in terms of sequences - so there's like thirty different sequences in a movie and at anytime those were shifting or being taken out or being replaced.
To a large extent: it's about economy of space. You have so little real estate when you're writing a half hour show. It's really twenty minutes. So you have to with a pilot introduce all your characters, set up the premise in a way that shows the potential for a series and make it funny and do it all in about thirty-five or forty pages. It's very hard.
That and when you're doing live action you don't normally get to see the thing before it's in production. In this case we'd go in every couple weeks and look at animatic and sketches. The way they do it - is they'll put it up on a screen and the storyboard artist who worked on that sequence will talk you through it. Kind of like a pitch session. Then they would leave and we would sit there with the directors and say 'Alright - what if we change that? What if we do that?' It's very different from live action.
