I see. I agree an infinitesimal change to one of 2 exactly identical states could make their expected welfare incomparable under your framework. However, it does not follow that any 2 interventions are incomparable with respect to how much they change expected welfare (across all space and time). I think intervals representing the expected change in welfare are sufficiently narrow for any decision-relevant comparisons to be feasible, although very often with lots of (standard) uncertainty involved.
I see. I agree an infinitesimal change to one of 2 exactly identical states could make their expected welfare incomparable under your framework. However, it does not follow that any 2 interventions are incomparable with respect to how much they change expected welfare (across all space and time). I think intervals representing the expected change in welfare are sufficiently narrow for any decision-relevant comparisons to be feasible, although very often with lots of (standard) uncertainty involved.
I’m still not sure I understand why you find the arguments in the linked post, and post #3 of the sequence, uncompelling. Can you say more on that?
Do you have more thoughts on this comment? Feel free to follow up there.