While working under Gen. Douglas MacArthur as a census consultant to the Japanese government , he famously taught statistical-process-control methods to Japanese business leaders , returning to Japan for many years to consult and to witness economic growth that he had predicted would come as a result of application of techniques learned from Walter Shewhart at Bell Laboratories . While working under Gen. Douglas MacArthur as a census consultant to the Japanese government , he famously taught statistical process control methods to Japanese business leaders , returning to Japan for many years to consult and to witness economic growth that he had predicted would come as a result of application of techniques learned from Walter Shewhart at Bell Laboratories .