The origin of "trickle down" economics apparently was a joke by Will Rogers many years ago. But nothing is too crazy that a lot of people won't believe it anyway.
Bottom line: if you want economic growth, more money to the wealthy is NOT the answer - they tend to hoard their money and spend less of their earnings than the non-wealthy. Instead, more money and net income to lower income persons who spend most of their income will increase demand for goods and motivate businesses to expand. Duh!
This article is from 2015 and is not an anti-Trump reaction article.