Neighborhoods change; they age and get expensive, and young people eventually flock elsewhere. Undoubtedly there is a case to be made against this pattern—though it’s a case that should be made on behalf of overrun low-income enclaves, not on behalf of the college grad who wants to support his art by watering plants two days a week. … We have built cottages in the ruins. Lost illusions, it turns out, are as good as any cheap building materials, and they go OK with Ikea couches.