Some people lived through amazing change. My grandmother was born in the late 1890s in rural Wales, and died at 95. She remembered electricity coming to her village and the visit of the first motor car, the arrival of radio and telephones. She saw men land on the moon and towards the end of her life went to the USA on a 747. Yet when she was a girl she lived with older farm workers who had never been more than ten miles from where they were born.