E. H. Powell Identified and glued a key vulnerability of Britannica, specifically, that its product sales (and, for this reason, the company's income) fluctuated strongly about the everyday living-cycle of the version. Just after the discharge of a re-creation, product sales would generally commence strong, and decline steadily for ten–20 https://www.facebook.com/NewTechFind/posts/pfbid02nxm3LrrzXbhNxPxqBM5nXv2arSBzQAdFc1mfa1abtLhDxbesR7DUViZ3eJwsWZ1l