Providing video companionship for isolated housewives, afternoon babysitting for children, and nonstop evening entertainment for the whole family, television revolutionized American society in the post-World War II years. Helping the first TV generation make sense of the new medium was the mission of Jack Gould, television critic of The New York Times from 1947 to 1972. In columns noteworthy for crisp writing, pointed insights, and fair judgment, he highlighted both the untapped possibilities and the imminent perils of television, becoming "the conscience of the industry" for...