I'd point out that Zandi uses Old school Keynesian models based on Klein... which considering stagflation exists... I'm not sure i'd base anything on old school Keynesian models unless I was just looking to make a political point.
In general a lot of economists would disagree and would have plenty of economic models and numbers that disagreed.
After all most economists dumped Keynesianism for Monetarism after Stagflation started, due to Stagflation being impossible according to oldschool Keynesian models.
Government spending DOES increase GDP though. Which is probably where those numbers come from. Of course, the reason it does increase GDP is because government spending counts in GDP. Of course, nobody talks about when the stimulus stops and everything drops right back down. Like well, what's happening right now. Real growth is replaced with temporary growth that crumbles away with the spending behind it.
You can find different economic models that will find all sorts of things, in general, all economic models tend to show is the inherent bias of the person making them.
Aside from which, weren't you the guy who argued that higher taxes on the rich would cause less money to be in overseas banks, even though money in overseas banks isn't taxed? Just saying, you probably want to get your economics basis down before your just believing blindly what a random economist tells you.
