“San Francisco’s newest public space is outlined with planters made of thick paper tubes. Granite slabs turned on their side provide seating. The ‘ground cover’ is asphalt topped by paint the color of weary sand. Oh, and a streetcar runs through it. No matter.” It’s still “urbanity at its ad-hoc best- and a reminder that when the aim is to better a city, small moves can be more fruitful than grand schemes.”