- [Narrator] The owner of the memex, let us say, is interested in the properties of the bow and arrow. He has dozens of possibly pertinent books and articles in his memex. First he runs through an encyclopedia, finds an interesting but sketchy article, and leaves it projected. Next, in the history, he finds another pertinent item, and ties the two together. Thus he goes, building a trail of many items. Occasionally, he inserts a comment of his own, either linking it into the main trail, or joining it by a side trail, to a particular item. His trails do not fade. Several years later, his talk with a friend turns to the Turkish bow. In fact he has a trail on it. It is an interesting trail, pertinent to the discussion. So he sets a reproducer in action, photographs the whole trail out, and passes it to his friend for insertion in his own memex.