There is no value to a superconcept that crosses that boundary.
This doesn’t seem to me to argue in favour of using wording that’s associated with the (potentially illegitimate) superconcept to refer to one part of it. Also, the post you were responding to (conf)used both concepts of utility, so by that stage, they were already in the same discussion, even if they didn’t belong there.
Two additional things, FWIW:
(1) There’s a lot of existing literature that distinguishes between “decision utility” and “experienced utility” (where “decision utility” corresponds to preference representation) so there is an existing terminology already out there. (Although “experienced utility” doesn’t necessarily have anything to do with preference or welfare aggregation either.)
(2) I view moral philosophy as a special case of decision theory (and e.g. axiomatic approaches and other tools of decision theory have been quite useful in to moral philosophy), so to the extent that your firewall intends to cut that off, I think it’s problematic. (Not sure that’s what you intend—but it’s one interpretation of your words in this comment.) Even Harsanyi’s argument, while flawed, is interesting in this regard (it’s much more sophisticated than Phil’s post, so I’d recommend checking it out if you haven’t already.)
This doesn’t seem to me to argue in favour of using wording that’s associated with the (potentially illegitimate) superconcept to refer to one part of it. Also, the post you were responding to (conf)used both concepts of utility, so by that stage, they were already in the same discussion, even if they didn’t belong there.
Two additional things, FWIW:
(1) There’s a lot of existing literature that distinguishes between “decision utility” and “experienced utility” (where “decision utility” corresponds to preference representation) so there is an existing terminology already out there. (Although “experienced utility” doesn’t necessarily have anything to do with preference or welfare aggregation either.)
(2) I view moral philosophy as a special case of decision theory (and e.g. axiomatic approaches and other tools of decision theory have been quite useful in to moral philosophy), so to the extent that your firewall intends to cut that off, I think it’s problematic. (Not sure that’s what you intend—but it’s one interpretation of your words in this comment.) Even Harsanyi’s argument, while flawed, is interesting in this regard (it’s much more sophisticated than Phil’s post, so I’d recommend checking it out if you haven’t already.)