The fact people continue to spout supply-side nonsense given the available macroeconomic data over the last three decades is beyond delusional. We've entered the realm of political cargo cult.
I'd counter that the last 80 years have proven Keynes right, generally, and supply side has been proven wrong again, as a badly gone experiment of the last thirty years.
You appear quite the ignorant fellow.
I can help, if you can learn:
1. The benefits from Reaganomics:
a. The economy grew at a 3.4% average rate…compared with 2.9% for the previous eight years, and 2.7% for the next eight.(Table B-4)
b. Inflation rate dropped from 12.5% to 4.4%. (Table B-63)
c. Unemployment fell to 5.5% from 7.1% (Table B-35)
d. Prime interest rate fell by one-third.(Table B-73)
e. The S & P 500 jumped 124% (Table B-95)
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f. Charitable contributions rose 57% faster than inflation. Dinesh D’Souza, “Ronald Reagan: How an Ordinary May Became an Extraordinary Leader,” p. 116
b. and c.
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2. The Reagan recovery:
"During this seven-year recovery, the economy grew by almost one-third, the equivalent of adding the entire economy of West Germany, the third-largest in the world at the time, to the U.S. economy. In 1984 alone real economic growth boomed by 6.8%, the highest in 50 years. Nearly 20 million new jobs were created during the recovery, increasing U.S. civilian employment by almost 20%. Unemployment fell to 5.3% by 1989.
Real per-capita disposable income increased by 18% from 1982 to 1989, meaning the American standard of living increased by almost 20% in just seven years. The poverty rate declined every year from 1984 to 1989, dropping by one-sixth from its peak. The stock market more than tripled in value from 1980 to 1990, a larger increase than in any previous decade."
Reaganomics Vs. Obamanomics: Facts And Figures - Forbes
That's reality.