Economists draw nonsensical Supply/Demand curves. The vertical axis has been screwed up by economists since they began. The vertical axis depends on your norm, and few theories put price as the norm. The supply of apples equals demand when the apple market has highest entropy (Entropy norm) or lowest noise (Minimum Variance). These are the two Norms in common use, I think no economic theory somehow makes price a norm, so why are they still drawing the curve like this? If we have price illusion or money illusion, it is a separate condition, one which traditional undergraduate economics enforces. Money illusions have to do with the mid-apprehension about the utility of money. Around here we misapprehend the value pot farming.
What is on the vertical axis of the IS/LM curves? Entropy or variance, depending on the norm. All the derangement theorems imply that the normative function for some important market has inversions. Since the theory needs a norm, its failure for any derangement syndrome must imply incompleteness in individual transactions. (The normative function is does not strictly obey the triangle inequality in all markets).
More later.