A 1957 Sports Illustrated cover had a picture of the Oklahoma football team, which had not lost in 47 games, with the caption “Why Oklahoma Is Unbeatable.” The Saturday after this issue appeared, Oklahoma lost to Notre Dame 7–0, starting the legend of the Sports Illustrated cover jinx—that the performance of an individual or team usually declines after they are pictured on the cover of Sports Illustrated. Explain how regression toward the mean might be used to explain the Sports Illustrated cover jinx.