I did have an inkling that I was going to be a writer. That was my intention. - Jane Jacobs

This is both a gloomy and a hopeful book. The subject itself is gloomy. A Dark Age is a culture's dead end. We in North America and Western Europe, enjoying the many benefits of the culture conventionally known as the West, customarily think of a Dark Age as happening once, long ago, following the collapse of the Western Roman Empire. But in North America we live in a graveyard of lost aboriginal cultures, many of which were decisively finished off by mass amnesia in which even the memory of what was lost was also lost. Throughout the world Dark Ages have scrawled finis to successions of cultures receding far into the past.

As for really new ideas of any kind—no matter how ultimately profitable or otherwise successful some of them might prove to be—there is no leeway for such chancy trial, error and experimentation in the high-overhead economy of new construction. Old ideas can sometimes use new buildings. New ideas must use old buildings.

I was brought up to believe that there is no virtue in conforming meekly to the dominant opinion of the moment. I was encouraged to believe that simple conformity results in stagnation for a society, and that American progress has been largely owing to the opportunity for experimentation, the leeway given initiative, and to a gusto and a freedom for chewing over odd ideas.