So what happens when all the books in the world become a single liquid fabric of interconnected words and ideas? Four things: First, works on the margins of popularity will find a small audience larger than the near-zero audience they usually have now. Far out in the "long tail" of the distribution curve — that extended place of low-to-no sales where most of the books in the world live — digital interlinking will lift the readership of almost any title, no matter how esoteric. Second, the universal library will deepen our grasp of history, as every original document in the course of civilization is scanned and cross-linked. Third, the universal library of all books will cultivate a new sense of authority. If you can truly incorporate all texts — past and present, multilingual — on a particular subject, then you can have a clearer sense of what we as a civilization, a species, do know and don't know. The white spaces of our collective ignorance are highlighted, while the golden peaks of our knowledge are drawn with completeness. This degree of authority is only rarely achieved in scholarship today, but it will become routine.