It’s Christmas Day, and as the festivities settle into a cozy rhythm and my children begin heckling me to open presents, my father-in-law asks if I know the history of Santa Claus and Coca-Cola. I nodded, recalling the tale of how the jolly, red-suited Santa became synonymous with the modern notion of Christmas, thanks in large part to Coca-Cola's marketing. He smiled – “fascinating, isn’t it?” he said as we quickly moved on to more pressing matters like making sure my four-year-old didn’t go...