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.

Jane Jacobs (1916-2006) American-Canadian journalist, author, urban theorist, activist

The Death and Life of Great American Cities, Part 2, ch. 10 “The Need for Aged Buildings” (1961)
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