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Incomes declining or stagnant for the vast majority in “rich” countries
"The impact [of declining earning power for large swaths of the population] could be more than purely economic if the disconnect between GDP growth and income growth persists.” In the cautious bureaucratic jargon of the McKinsey researchers, “more than purely economic” carries a freight load of meaning: it signifies the recognition by this think tank that the deterioration of working-class living standards has revolutionary implications.