Card Catalogs

"In Control Through Communication, her study of 19th century information management, JoAnne Yates identifies five breakthrough technologies. There’s the telephone and telegraph, which handle external communication. For internal communication, the big three are the typewriter, carbon paper (and other duplication technologies), and filing systems, especially the vertical file and card catalog. The others made information … Continue reading Card Catalogs

The Bit Bomb

"Shannon’s ‘mathematical theory’ sets out two big ideas. The first is that information is probabilistic. We should begin by grasping that information is a measure of the uncertainty we overcome, Shannon said – which we might also call surprise. What determines this uncertainty is not just the size of the symbol vocabulary, as Nyquist and … Continue reading The Bit Bomb