First , thank you for a very interesting, well-written article.

What struck me most about it, as praxeology relates to economics, is that everything "proven" relates to microeconomics. The only macroeconomic issue addressed is Say's Law--"confirmed," not "proven."

That "Law" is extremely important. Asserted at the inception of macroeconomics as a subject of study, it ruled that discipline as dogma until Keynes finally refuted it in 1936.

Say's Law said much more than "production must proceed consumption." That is merely saying something must exist before it can be consumed.

Say's Law asserted that there could be no sustained disequilibrium between supply and demand in the economy as a whole because the process of production of every individual commodity must necessarily generate the means (money) for the consumption of what is produced.

Keynes showed how a sustained disequilibrium between supply and demand can exist. To my mind, Say's Law raises the issue of the distribution of the money production produces.

As Keynes pointed out, if too much of that money goes to people whose "propensity is consume" is too low (due to a surfeit of money), it will stifle consumption of what is produced (much less has the potential to be produced with the existing stock of capital).