It's 2084, and Aldus, an elderly robot repairman, is writing the history of the 21st century for his grandson, Luca. Born in 2010, Aldus lived through it all-the War on the Warming, the repair of the planet, the rise of true artificial intelligence, automation everywhere and much more. "I was but a foot soldier," Aldus tells his grandson, "but there is value in that perspective." Heartfelt, hopeful, and often humorous-a utopian...