My argument has been:
• Orthodoxy is a failure.
• Heterodoxy is a failure.
• There is no alternative to the Structural Axiomatic Paradigm.
As far as orthodox and heterodox approaches are formalized they imply I=S. The Structural Axiomatic Paradigm implies the 2-sector Profit Law as given by Wikimedia AXEC09:
All variables are measurable, all premises have been made explicit, all relevant points have been discussed, now economic reality has the last word. Let the test speak.
Egmont Kakarot-Handtke