Correction
The Armchair M.B.A. column last Sunday, about Cognizant Technology Solutions, an outsourcing company, misstated the given name of a member of its board and the job title he formerly held at Paine Webber. He is Thomas M. Wendel, not Bob, and he was the chief financial officer, not the chief executive. (He was the chief executive of two other companies, Bridge Information Systems and Liberty Brokerage.).