Things: In Touch with the Past by Carolyn Korsmeyer (Oxford University Press), $49.95/£32.99 Relics, keepsakes, artworks, heirlooms, mementos, memorials. Despite their variety, all of these objects share a distinctive common feature: it matters to us that they are genuine, authentic, real. I have an insignia ring that belonged to my father. A replica or replacement […]