For E.A., The Sims, the latest from Will Wright, the celebrated designer of 1989's city-planning game SimCity, was a legacy project, inherited when the company purchased its development studio, Maxis. … Jim Mackraz, Barrett's boss, needed a task to occupy his new employee, and he handed Barrett a document that outlined how social interactions in the game would work; the underlying rules for the game's A.I. that would dictate how the characters would dynamically