John Maynard Keynes theories don't work!

We keep following Keynes theories but we have little or no evidence that they worked when they were close to the conditions that he said were close to necessary for his theory to work.  Today, the problem is debt.  We have two much private debt, we have to much public debt, and Keynes would never work with this amount of debt.  The current politicians are drunk on Keynes and we are being led down a real wrong path.