I&rsquom never quite sure what it is about cities that drive usto such passionately engaged views of them. Perhaps because they are the most congested agglomerations of humankind, often with colourful and significant histories, they offer sharp, microcosmic and variegated perspectives on contemporary soci­eties, thus making them an endlessly interesting theme to read (and write about). Or perhaps where we grow up, live and work (they could be different places, of course) has a transformative effect on what we become and still want to be, as Tulsi Badrinath suggests in the title of her fourth book on Chennai.