Earlier I listed some of the basic characters and consequences of printing in teaching and learning. It seemed a useful way of moving from the know to the less well known. I have insisted that any new structure for codifying experience and of moving information, be it alphabet or photography, has the power of imposing its structural character and assumptions upon all levels of our private and social lives, even without benefit of concepts or of conscious acceptance. That is what I've always meant by "the medium is the message." Moreover, a new medium bombards older media and awareness, stripping the older forms of experience to their bare bones or basic codes.