>As the reader can see, job cycles in the post-supply-side world (which began in the 80s) are significantly weaker than *job cycles in conditions in which the wealthy paid a higher percentage of their income in taxes [presumably in the 50s and 60s]*.

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>This bottom-up model, Keynesian economics, provides public support for the neediest, which keeps "subsistence" funds in the general economy, for things like energy, food, shelter, and medicine. *But Keynesian economics is also concerned with expanding and raising up the broad middle class so that we can move beyond subsistence and into a gradually increasing standard of living*.

These two statements demonstrate that the author is not an economist; the high mid-century tax rates was targeted towards a small handful of billionaires and left most people untouched, and proper Keynesian economics is only valid during periods of sub-zero interest rates.