One of my favorite series of photography tomes, is the amazing TIME-LIFE books from the 70's. if you've never seen them. Anyone wishing to gain insight into photography, film or digital. Will benefit tremendously from these books. They can often be found in libraries , and I have many garage sale copies bought for .25c. In the 1972 book "Frontiers of Photography". In the first chapter titled "Clues to the Future" ,they discuss the future and offer the following: "" The development of such methods, so far removed from traditional photography, that the supercamera of the future may not even use film as we know it. Conceivably the camera could contain a permanent sensitive plate that could record and erase images, the way a tape recorder does with sound. It might be loaded with plain paper. After exposure, prints could simply be pulled out."" They got part of it right. Our digital cameras do not spit out prints, but we do print on plain paper, as apposed to light sensitive paper. I remember the first time seeing a Xerox copier, "back in the day". My young brain always thought that one day they'll shrink the thing down. When I place my 1972 Nikkormat next to my D90, it's like a giant leap for mankind, or at least for the photo obsessed segments of it.