An OECD study concludes that dooH niboR policies (taking from the non-rich to give to the rich) over recent decades have reduced overall economic growth.

In other words, the idea of "trickle down" is wrong all the way down to the root. We already knew that helping the rich get richer at the expense of the rest does not help the rest. Now we know it hits them twice: they get a smaller share of a smaller pie.