Yes Martha, tax revenues do go up when you cut taxes and hence generate increased economic activity.
Then why don't they halve the tax rate on the top 5% of the hard working? What you see is a combination of tax shifting, inflation, government borrowing, but if you had the intelligence to comprehend the article or read past the first couple of paragraphs, you would know this. Tax rate cuts without concomitant spending cuts just shift the burden of payment somewhere else ie the future.