Isn't Keynesian economics like the Mary Kay sales rep buying from herself? The more she buys from herself, the higher her commission. The same is true with the Keynesian model. The government effectively takes tax dollars and gives it to people to dig holes in the ground just to have these same people fill them up again. Then the government pays them a wage using tax dollars then tax that wage, with nothing productive as the result. No wealth is generated just an endless circle jerk of transferring tax dollars to unproductive workers then back to the government again, then back to the unproductive worker then back to … You get the point.
At this rate we'll all be in Pink Cadillacs in no time.