HOW CBS IS CHANGING CHANNELS
SIXTEEN months ago, when a Pillsbury executive from Minneapolis named Thomas H. Wyman ac-cepted the job as president and chief executive of CBS Inc., he was throwing himself into the turbulence of at least two potential storms. First, Mr. Wyman had accepted a job under William S. Paley, CBS's 79-year-old founder, largest stockholder and chairman of the board, who had earned a reputation for capriciously dismissing chief executives. During the previous eight years, Mr. Paley had forced the resignation of no less than four hand-picked heirs apparent -Frank Stanton, John A. Schneider, Arthur R. Taylor and John D. Backe. In addition, Mr. Wyman agreed to take over a company vastly different from any he'd ever managed, and he did so at a time when the company's basic business - broadcasting - seemed theatened by a revolution in telecommunications unlike any since the introduction of television itself. The selection of Mr. Wyman raised the question of whether basic management skills are sufficient to outweigh the absence of experience in a wholly new field. Mr. Wyman had spent his career dealing mostly with tangible consumer products such as cameras and packaged foods. Could he just as effectively run a diversified $4 billion company whose main product - entertainment and information - depends on the creative efforts of individual writers, performers and producers?