The Information - James Gleick [27]
It was not easy to explain. Friar Johannes Balbus of Genoa tried in his 1286 Catholicon. Balbus thought he was inventing alphabetical order for the first time, and his instructions were painstaking: “For example I intend to discuss amo and bibo. I will discuss amo before bibo because a is the first letter of amo and b is the first letter of bibo and a is before b in the alphabet. Similarly …”♦ He rehearsed a long list of examples and concluded: “I beg of you, therefore, good reader, do not scorn this great labor of mine and this order as something worthless.”
In the ancient world, alphabetical lists scarcely appeared until around 250 BCE, in papyrus texts from Alexandria. The great library there seems to have used at least some alphabetization in organizing its books. The need for such an artificial ordering scheme arises only with large collections of data, not otherwise ordered. And the possibility of alphabetical order arises only in languages possessing an alphabet: a discrete small symbol set with its own conventional sequence (“abecedarie, the order of the Letters, or hee that useth them”). Even then the system is unnatural. It forces the user to detach information from meaning; to treat words strictly as character strings; to focus abstractly on the configuration of the word. Furthermore, alphabetical ordering comprises a pair of procedures, one the inverse of the other: organizing a list and looking up items; sorting and searching. In either direction the procedure is recursive (“recourse, a running backe againe”). The basic operation is a binary decision: greater than or less than. This operation is performed first on one letter; then, nested as a subroutine, on the next letter; and (as Cawdrey put it, struggling with the awkwardness) “so of all the rest. &c.” This makes for astounding efficiency. The system scales easily to any size, the macrostructure being identical to the microstructure. A person who understands alphabetical order homes in on any one item in a list of a thousand or a million, unerringly, with perfect confidence. And without knowing anything about the meaning.
Not until 1613 was the first alphabetical catalogue made—not printed, but written in two small handbooks—for the Bodleian Library at Oxford.♦ The first catalogue of a university library, made at Leiden, Holland, two decades earlier, was arranged by subject matter, as a shelf list (about 450 books), with no alphabetical index. Of one thing Cawdrey could be sure: his typical reader, a literate, book-buying Englishman at the turn of the seventeenth century, could live a lifetime without ever encountering a set of data ordered alphabetically.
More sensible ways of ordering words came first and lingered for a long time. In China the closest thing to a dictionary for many centuries was the Erya, author unknown, date unknown but probably around the third century BCE. It arranged its two thousand entries by meaning, in topical categories: kinship, building, tools and weapons, the heavens, the earth, plants and animals. Egyptian had word lists organized on philosophical or educational principles; so did Arabic. These lists were arranging not the words themselves, mainly, but rather the world: the things for which the words stood. In Germany, a century after Cawdrey, the philosopher and mathematician Gottfried Wilhelm Leibniz made this distinction explicit:
Let me mention that the words or names of all things and actions can be brought into a list in two different ways, according to the alphabet and according to nature.… The former go from the word to the thing, the latter from the thing to the word.♦
Topical lists were thought provoking, imperfect, and creative. Alphabetical lists were mechanical, effective, and automatic. Considered alphabetically, words are no more than tokens, each placed in a slot. In effect they may as well be