Interesting, thanks for the article. I think the economy is to dynamic to be able to separate out all the cause and effects. In the eighties the tech sector was less than 10% of the economy. You eluded to profits didn't take off until a decade later, that's when the big gains in efficiencies from the tech revolution kicked in. I think it’s safe to say a dollar less paid in taxes is a dollar more in profit. From a stock valuation approach these are leveraged dollars of sorts, companies didn't have to invest capital to get the return.