To this pair of ears, Neil MacGregor’s wildly successful A History of the World in 100 Objects delivered rather less than it promised. One grew weary of the historical relativism: to be told that a gang of Stone Age wheat-grinders encamped on the forest floor were “just like” modern-day office workers gossiping around the water cooler tells us very little about either society. None of this boded well for the director of the British Museum’s take on the nature of German identity.Again, MacGregor has chosen to worm his way into the human psyche by way of a series of highly symbolic artefacts. Last week’s batch (6-10 October) included the Lutheran Bible of 1541, the first edition of the Grimm brothers’ Children’s and Household Tales from 1812, Caspar