J ane Jacobs, great urban thinker, passed away this week in Toronto. Some of you who know me know that I'm an urban economist by training. Well, a lot of my modes of thinking about cities are influenced by Jacobs - things such as the joys of neighbourhoods, messiness, seeming inefficiencies such as small enterprises that are vital and crucial for economic growth, and more than just growth, life. Her effort to save Greenwich Village is well celebrated - the Village Voice , obviously, paid its tribute - but there's an entire body of work that she produced, well-written and fundamentally insightful, starting from The Death and Life of Great American Cities , that, thankfully, became highly influential. I remember being very struck by The Economy of Cities first time I read it: its first chapter noting how despite the popular imagination of people first learning to farm before organising into cities, urban life has always preceded agricultural life in civilisations, and its poin...