Keynesian economics is meant for periods of severe economic downturn only. It has not been proven a failure since we have not used it since the Great Depression. If you are talking about demand side vs. supply side, you should say as much. We, however, have not had demand side policies since the Clinton era. Our tax system remains supply side because it exists as it did under Bush. The system of incentives is also supply side. Government spending is down substantially under Obama, due in no small part to Republicans of course, but you can't claim this administration as an example of a failure of either Keynesian or demand side economics.
As for a PhD, I don't know what you think that means, but it is a degree based on speciality in specific discipline and narrow subfield. It does not mean a person knows everything about everything.
In order to be awarded a PHD, you must have completed a Masters program.
To be awarded a Masters, you must have completed a Baccalaureate. In order to have completed a Bachelors, you would have to have graduated high school or equivalent.
Leaving out whatever writing skills you would have had to demonstrate prior to your Masters, once you finish your Masters, you would have written a thesis.
To complete your PHD, you would have written a dissertation.
Neither your thesis nor your dissertation would have been accepted if you exhibited the writing skills you have shown since you have been on this forum.
Therefore a logical person would conclude your claims of having a PHD could only mean whatever you have is only on the order of piled higher and deeper.
Does this enlighten you further ?
Whoever you think you're fooling doesn't include me. That's for certain.
I have faith that all of my fellow cavers are not fooled by you either.