About a week before I descended on Basel, Switzerland, in mid-March to attend my (cough, cough) 13th Baselworld fair, I spent a few days in Mexico City with my boyfriend, Jim. We made the most of our long weekend—we admired the Diego Rivera murals at the Palace of Fine Arts; ate 602-day-old mole at Pujol, one of the city’s finest restaurants; and, best of all, visited the nearby pyramids of Teotihuacan, the remnants of a pre-Columbian civilization that reached its zenith around A.D. 500.By the time I arrived in Basel, however, my brush with the ancient world was all but forgotten; everyone was talking about smartwatches. The future was barreling down on me faster than a speeding processor. So you can imagine my surprise and delight when I found myself at the De Bethune booth admiring the avant-garde brand’s new DB25 Quetzalcoatl timepiece, a tribute to the mythical deity of ancient