“Cities, like dreams, are made of desires and fears,” the novelist Italo Calvino wrote.1 What cities— collective constructs of bricks and dreams, will we—should we—or should we not fabricate in the future? How might science fiction help us see our unexamined assumptions, expand the range of possibilities we consider, give us a feel for the lived experience of possible futures, and enlighten our decisions? As prompts for our urban imagination, I talked with a set of science fiction authors. The Irish poet Oscar Wilde said, “London itself became foggier after the impressionists painted their cityscapes.”2 Our understanding of our current