Tradition is an experiment that has worked

They determined over time, for example, that Cabernet Sauvignon grapes did best in Bordeaux and Pinot Noir grapes performed well in Burgundy, so no one had to waste time trying to grow Pinot Noir in Bordeaux or Cabernet Sauvignon in Burgundy. The lessons of history had already been learned. As Émile Peynaud, a University of Bordeaux professor and the leading French wine guru of the twentieth century, said, “Tradition is an experiment that has worked.”

G. M. Taber, Judgment of Paris: California vs. France and the Historic 1976 Paris Tasting That Revolutionized Wine (2005), 18