Robert Sobel was an American professor of history at Hofstra University, and a well-known and prolific writer of business histories. He was also a chess Master, who represented the United States at the 1957 and 1958 Student chess Olympiads; he defeated thirteen-year-old future World Champion Bobby Fischer at Montreal 1956.
Despite his prolific writings in business history, he is most famous for his single novel, For Want of a Nail, an alternate history of the United States.
This 1985 book should not be confused with a more recent book with the same title. Sobel describes how the Japanese beat Detroit in the automobile manufacturing and selling game. It is far shorter and far more accurate than Halberstam's book, The Reckoning on the same subject. For instance, Sobel looks at how long it takes the Japanese to change a stamping die versus the Americans (spoiler alert: the Japanese do it faster).