Philadelphia Inquirer | 01/23/2003 | When files survive, but not the technology to read them

“Joe Miller of the University of Southern California recently learned that he could not access data from the 1976 Viking Mars landings, which were stored on magnetic tape; a [15-year-old] digital version of the approximately 900-year-old Domesday Book [produced with thousands of UK school chidlren] can only be read by specially tailored hardware and software that are aging; and PC users who migrate files from one format to another may experience losses. ”