-And so from that, I've always been fascinated with the idea that complexity can come out of such simplicity.

Also, after people play these Sim games, it tends to change their perception of the world around them, so they see their city, house or family in a slightly different way after playing.

Everybody has a different definition of the good side.

A lot of the interesting issues and dynamics within a city occur over things such as socio-economic issues or ethnic issues. But they require a much more elaborate model of human behavior.