Those who argue against digital archiving of images tend to overlook that, once scanned, it is possible to periodically copy large digital archives entirely without human intervention ie there is no expensive labour cost
Separations of important movies are stored in former salt mines which are impervious to fire, flood, etc.
Does anyone believe that a spool of valuable MP film or file of B&W negatives has never been irrepairably damaged by water, fire or other misadventure? Please don't forget when arguing against it that a digital archive of anything can exist identically in any number of locations and for that reason alone it is the ultimate back-up. OzJohn