E. H. Powell Determined and fixed a key vulnerability of Britannica, specifically, that its profits (and, for this reason, the company's income) fluctuated strongly around the daily life-cycle of an version. Right after the discharge of a new version, income would generally begin potent, and decrease gradually for ten–twenty years https://www.facebook.com/NewTechFind/posts/pfbid035kkKFhG2TFjSyxMguAJv7V8RiRY4J9eAeysM7C9rXKL83JK5yDitW3Hb3nBQga95l