29th October 1971: City workers studying newspapers about UK entry to Europe's common market (Photo by Douglas Miller/Keystone/Getty Images)Getty ImagesIn my last article, How To Picture—And Understand—The Dow For The First Time, I showed how understanding the American stock market involves mastering the relationship between the long-term total return of leading firms and their performance on three key value-creating principles:Customer value generally outperforms short-term profitsAutonomous networks gener ...