In this book I offer assertions, short cuts, mental games, and other tools; I propose ways to grapple with everyday, visible, accessible evidence of the so-called urban revolutions of our time. My examples are chosen from everyday events and familiar objects, the happenings and places of ordinary life, from the street rather than from the laboratory. All these can and should be tested, criticized, improved upon or modified. I hope this effort will encourage others to look at urban change in more organized ways.