AN EDITOR SHOULD HAVE CAUGHT THIS MISTAKE

Michael Ettinger & Michael Linden present some evidence that supply-side economics (sse) has not worked over the last 30 years EXCEPT for their claims that sse results in lower job creation and lower productivity growth.

The difference between 1980s sse and 1990s non-sse is statistically insignificant and even the comparison between the 2000s sse and 1990s may not be significant.  One should also have strong reservations about their claim that productivity increases are greater in non-sse eras: