What criteria do they use to cancel a show like this?

It's too bad that some humorless shortsighted executive who perhaps didn't get it has the power to cancel such a brilliant show. The subtle humor, the bizarre characters the sweet interchanges, (all without getting slapstickish or crude as so many shows that try play for the cheap laughs) will make this a classic whose life was cut short and thus sadly joining the fate of other such shows like Freaks and Geeks and Arrested Development. Whoever made the decision to cancel this show should be fired or demoted to work at Nickolodean where their abilities or lack thereof to understand incredible amazing humor may be better served.