It’s hard to paint a coherent picture, because each of these regulations are put in place at different times for different reasons. The result is cumulative, but the motivations were fractured and complicated.

Humans have changed little over time. Zoning was the trendy new area of law in its day and was supposed to make cities and suburbs great. The road to hell is paved with good intentions.

They've been on the books since the early postwar era, when we didn't know any better. The question is: how do we get them off the books?