I have my MBA, and I can assure you there is nothing I ever understood about economics other than 2 things which I learned on my own:
1. The Laffer curve (which was not taught in my class).
2. Never invest in anything that eats (which was not taught in my class).
the laffer curve has been superseded by a combination of the curve and the present value of money. Its a wonderful explanation of how government theft causes poverty.
quick and dirty
cutting tax rates/total receipts in year 0/causing a ramped up net economic activity in years 2,3,4,5 ect) In the end its a way to finally quantify a dynamic scoring of tax policy vs the stupidity we are doing now