The charm of old money

IN THE 1950s they bought hula hoops. Since the 1980s they have been piling into mutual funds. And before long they will be knocking feebly on the doors of old-people's homes. Anyone who has followed the progress of the post-war baby-boomers is liable to believe a pile of easy money can be made by a correct reading of the demographic runes. In fact making money from the elderly is not as easy as it looks.