Maria Popova

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From a new Maria Popova piece at Slate about Vannevar Bush’s 1945 Atlantic essay, “As We May Think,” a passage about the compression of information:

“Marveling at the rapid rate of technological progress, which has made possible the increasingly cheap production of increasingly reliable machines, Bush makes an enormously important—and timely—point about the difference between merely compressing information to store it efficiently and actually making use of it in the way of gleaning knowledge. (This, bear in mind, despite the fact that 90 percent of data in the world today was created in the last two years.)

Assume a linear ratio of 100 for future use. Consider film of the same thickness as paper, although thinner film will certainly be usable. Even under these conditions there would be a total factor of 10,000 between the bulk of the ordinary record on books, and its microfilm replica. The Encyclopoedia Britannica could be reduced to the volume of a matchbox. A library of a million volumes could be compressed into one end of a desk. If the human race has produced since the invention of movable type a total record, in the form of magazines, newspapers, books, tracts, advertising blurbs, correspondence, having a volume corresponding to a billion books, the whole affair, assembled and compressed, could be lugged off in a moving van. Mere compression, of course, is not enough; one needs not only to make and store a record but also be able to consult it, and this aspect of the matter comes later. Even the modern great library is not generally consulted; it is nibbled at by a few.”

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