According to press reports, the Trump administration is basing its budget projections on the assumption that the U.S. economy will grow very rapidly over the next decade — in fact, almost twice as fast as independent institutions like the Congressional Budget Office and the Federal Reserve expect. There is, as far as we can tell, no serious analysis behind this optimism; instead, the number was plugged in to make the fiscal outlook appear better.
I guess this was only to be expected from a man who keeps insisting that crime, which is actually near record lows, is at a record high, that millions of illegal ballots were responsible for his popular vote loss, and so on: In Trumpworld, numbers are what you want them to be, and anything else is fake news. But the truth is that unwarranted arrogance about economics isn’t Trump-specific. On the contrary, it’s the modern Republican norm. And the question is why.
Math has a liberal bias.