After recently reading Market Cities, People Cities and hearing a talk by one of the authors plus having several conversations with people about how sociologists think about how communities and organizations develop and change, I wanted to outline how cities and suburbs change over time. Here is how I would describe it:

1. A community or organization is founded. Relatively small in size at the start, it takes on characteristics and activities of its founder(s). These initial traits can have effects down the road but are not necessarily deterministic of where the community will end up. Inertia and founding energy carry the social collective along.
2. Two major categories of social phenomena can lead to change. One option is outside social forces or pressure. Examples for communities could include broader shifts (such as new residents moving there from elsewhere, changes in government policies or funding, large-scale economic shifts, or changing cultural norms in the broader society) as well as more local changes (such as requests for new development, budget issues, a critical mass of new residents in the community, changes brought by local elections). A second option is internal decisions made to go a different direction (or reaffirm the existing inertia/path). These decisions are often a reaction to outside forces but they can also spring up from internal discussions and thinking. Examples of this could include requests for new developments, budget issues, and a critical mass of new residents.
3. A period of inertia then follows until another major period of decision/reaction to outside forces takes place.
4. The community or organization then goes on until it doesn’t.

To sum up: communities tend to follow a particular path of development and community life until something happens externally and/or internally that often allows space to have a discussion about a different vision. This “something happens” could be the result of external forces or internal forces or decisions. Emerson and Smiley rely more on steps toward developing a social movement while my own suburban work suggested “character moments” could lead to new paths. This collection of founding characteristics plus key moments then comprises the unique character of a community or organization that can differentiate it from an organization of community of the same broader kind.