Can I suggest perhaps using a chatbot to critique your analysis so that you can see where post-keynsians may agree and disagree with you. To get an idea, this was a summary I was able to generate for DiGiovanni’s post (I promise I will read it later but just wanted to get something back to you quickly):
Post-Keynesians would read DiGiovanni’s post as a talented insider finally arriving at conclusions Keynes/PKs have held since the 20s, but stopping just short of the full break. They’d applaud the demolition of the six EA approaches. They’d say the positive alternative shouldn’t be “imprecise UEV plus near-term welfare” but rather a non-probabilistic framework built around conventions, weight of evidence, option-value preservation, and institutional robustness — and they’d point out that PKs have been developing exactly this toolkit, largely ignored by the EA and rationalist communities, for years.
Further, the article stays entirely inside a probabilistic framework — even its critique of expected value uses expected value concepts (UEV, credences, imprecise probabilities). From a PK view, the deeper missed point is that genuine uncertainty isn’t just hard to quantify, it’s unquantifiable in principle, and no refinement of the probability calculus fixes that.
The other big gap is the absence of a positive theory of action under true uncertainty. Keynes, Shackle, and Davidson all had answers — conventions, weight of evidence, option-value preservation — but DiGiovanni ends up in a kind of paralysis (“suspend judgment”) without drawing on this tradition. PKs would also flag the missing institutional dimension: the article assumes the problem is individual decision-making under uncertainty, when the Keynesian answer was always partly collective — build institutions that reduce the damage uncertainty can do, rather than trying to calculate through it.
lol embarrassing. Looks like it didn’t actually read it. Will try again…
Would be very interested to hear from you though, if you do your own analysis of what PK would critique from those posts. (You will be far better placed than me to make sure it doesn’t miss things)