
In The Death and Life of Great American Cities, Jane Jacobs launches a direct attack on mid-20th-century urban renewal and orthodox planning. She argues that the biggest failures of modern rebuilding—tower-in-the-park projects, single-use districts, superblocks, and highway slicing—come from misunderstanding what cities are: not tidy machines, but living systems whose strength comes from everyday diversity and constant street-level interaction.
Jacobs builds her case by observing ordinary scenes: sidewalks that stay safe because of “eyes on the street,” parks that thrive only when surrounded by active mixed uses, and “slums” that improve themselves when residents can stay put and reinvest. She then identifies four conditions that generate city vitality—mixed primary uses, small blocks, aged buildings, and high concentration—and shows how cities decline when planning and financing destroy those conditions. The book concludes with practical tactics for housing, traffic, design, and governance, grounded in the idea that a city is a problem of organized complexity.