It is basically failed economic thinking... OK so government will borrow money today to spend money and then this improves the economy somehow. I dunno how the Keynesianism keeps coming back every time it is proven false (1970's, early 1980's, Japan 90's and now again). It is like people want to believe in it, even though even in theory it is garbage. Why would people invest capital in building companies, etc when they know a big tax hit is coming to pay for the accumulated debt of today?