People say that the more wine you drink, the more you "learn to appreciate" fine wines (we're talking about over the course of a lifetime, of course, not over the course of an evening!). Assuming this is true, is one's taste in wines actually improving over time? Or is it just changing? If the connoisseur likes dry red wine from France, and the "pleb" likes sweet white wine from Romania, what makes the connoisseur's taste superior to or more refined than the pleb's taste? Is it just the institution of wine-loving that contructs one taste as superior to the other, or do the connoisseur's taste buds literally detect marks of quality that the pleb's doesn't?