That is to say that every single book will be magnetized, will be ordered under complicated mathematical clusters, by related subjects, and semantic markers. You will state your questions, or the subject you are interested in, and the computer will find the books for you. Instataneous retrieval brings with it enormous changes in our relation to the history of a subject, because there is a cut-off point in all these systems beond which the previous books are no longer relevant. They have been adequately subsumed in the later ones. You have a completely different way of organsing knowledge-an immensely efficient and in many ways powerfully logical way, but which blocks the essential motion of the hand reaching along a shelf and stumbling on what it did not know was there. When these great knowledge and data-banks, as they are called, are operative there will come a whole change in the way the human mind and eye live with books.