TUCKED AWAY ON pages 119 and 122 of the October 6 issue of Der Spiegel, a weekly German news magazine comparable to Time or Newsweek, was a news item of considerable significance: A scientific analysis of the manuscript purported to be the original diary of Anne Frank, a Jewish girl who died in a German concentration camp during the Second World War, has revealed that the manuscript could not have been written before 1951, six years after the end of the war