Some people need a math lesson.

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1. correct, and this is one of the reasons some people get fooled into thinking cuts pay for themselves

with top taxes going from 39.6% to 37%, people think that seems like a small cut and therefore the economy only needs to grow a little to recoup the revenue.

in fact, the cut of 2.6 percentage points amounts to a cut of over 6.5%.

so the economy would have to increase by 6.5% solely due to the cut in the top income tax rate in order for the government to break even on revenue.

this effectively impossible. the economy is not going to grow at a 6.5% rate, and it's certainly not going to grow at a rate 6.5 percentage points faster than it's already growing -- remember we're not in a recession!