This animated GIF illustrates what animates the city. Now how do I improve it?

This work is licensed under a Creative Commons License.

As steady readers know, I am purely a one-trick pony, a hedgehog (as opposed to a fox) and the one thing I know is the centrality of parking, street wall etc etc. in creating a real city. My purpose in creating this animated GIF is to have a useful didactic prop to stimulate discussion and to maintain focus on what is important. As I have discussed here on this blog at probably tiresome length, it is the relationship illustrated by the animated GIF above which explains why some streets are dead and then how to animate them (at least the physical pre-condition for animating them.)

Any suggestions to make it clearer, simpler, more direct and forceful will be happily accepted. I wondered, for instance if we should include on-street parking to the urban model and possibly eliminate the sidewalk in the suburban one as both are associated factors. But with that added complexity perhaps, I guess, we'd have to have a series of GIFs which cycled through and added/deleted elements? And I have to consider whether this is a stand-alone animation for the blog and/or if I'll use it in some sort of public presentation where I would be expanding and commenting on it. Hmmm. But enough for today!

(And thanks to Carl Juarez for his essential and indispensible technical assistance in actually creating the GIFs.)

UPDATE: Thanks for the suggestions! It's very helpful to receive feedback.

UPDATE 10/9/04: Don't miss this clarification of assumptions about the graphic. And And don't mis this one: The irreducible essence of city-ness.