In 1977, the game was split into two branches: the relatively rules-light game system of Dungeons & Dragons and the more structured, rules-heavy game system of Advanced Dungeons & Dragons (abbreviated as AD&D or ADnD). AD&D 2nd Edition was published in 1989.
Competitive intelligence is the action of defining, gathering, analyzing, and distributing intelligence about products, customers, competitors, and any aspect of the environment needed to support executives and managers making strategic decisions for an organization.
Competitive Strategy: Techniques for Analyzing Industries and Competitors. A hugely popular book that is taught in most business schools, and read by those interested in business success. It put strategic innovation at the forefront of management thinking, and proposes a solution to the eternal strategy dilemma.