Forgive the unrelated photograph. It's me on the back of a mechanical harvester, taken on Thursday afternoon in Entre-Deux-Mers. The other rider is Beverly Blanning. We were watching the harvest at Chateau Lavison, where Merlot was being picked, and the offer was made: do we want a ride? So precariously balanced on the back, quite high up, we watched as a couple of rows were picked. It's amazing how these machines can pick so well: the reception bins contained almost exclusively intact...