Re: I don't get it
"Supply-side economics: works EVERY TIME it is tried! JFK, Regan, Trump."
I guess that depends what you mean by "works". Supply-side economics "works" as intended by giving the rich more money. But for me what "works" bst is a slowly but steadily growing economy, maybe with some wobbles but no major crashes, where both average and median incomes steadily rise (inequality is growing less).
Supply-side economics might make an initial economic improvement (enjoyed mostly by the richest) but results after a few years in a big crash and long recession / depression. Happened in the 30s, happened with with Reagan, happened with Bush II (I don't really know about JFK).
The very fact that you are claiming it "works" with Trump before the cuts have even come into effect shows that for you this is a matter of faith, not evidence.