Yes, the article ignores the rampant inflation that was unleashed when we broke the Bretton Woods agreement in 1970. Workers tried to keep up with COLA's to adjust wages with inflation but the progressive tax system just moved them into higher and higher tax brackets that were not indexed for inflation...so their nominal wages declined...at the same time the employers faced with higher and higher wage demands began to borrow devaluing funds to invest in appreciating capital equipment that could eliminate skyrocketing labor and labor benefit costs. Of course real wages declined as the tax take increased and as investment was driven to eliminate, not augment, labor.