An interesting idea from PPD 524: Planning Theory:

There are approximately 100,000 new homes sold every year in California. Most of these are on the edge of our cities. This number represents 1-2% of California homeowners. Furthermore, new home buyers tend to repeat new home purchases. Is this one percent minority representative of the population? If not…

The city is being built, year by year, by a minority. One percent dictates the future.