We all hate taxes but they don’t pay for themselves. Or do they?
How do they come up with such optimistic numbers? Easy: by making optimistic assumptions. That, as former Obama economic advisers Larry Summers and Jason Furman point out, appears to be what they’re doing. They simply seem to assume the best and then say that if this scenario played out over the next 10 years — which it almost certainly wouldn’t — then these tax cuts really would add 0.3 to 0.4 percentage points to growth, which would cover $1 trillion lost in cuts. Although, as bad as that sounds, it’s actually even worse than that, since the Republican economists also seem to have misstated or misunderstood some of the studies that they claim show the economy would grow as much as they say.