As a supporter of Murray Rothbard’s views on utility and welfare economics, I believe that it is impossible to measure individual utilities (often conceived of as pleasure and pain), in the sense of putting them in terms of a common cardinal unit (often called “hedons” for pleasure and “dolors” for pain).
I believe this because, as Rothbard noted, the lack of an objectively extensive physical quantity which would correspond to such units means that they cannot be operationalized, and therefore cannot be meaningful. (“Objectively extensive” means that it must be a quantity with physically extended dimensions in the objective, interpersonally-accessible world.)
If we grant, as we plausibly might, that it is physically possible to invent machines that manage to read into human minds, then this language about it being impossible to do this must be qualified to saying only that it has never been done, and that it is unlikely to be done in the foreseeable future.
I believe that, even in a world with such machines, there would always be stubborn hardliners, who would claim that their experiences are richer than, or different from, what the machines say they are. There would be an ideological split over whether to accept the results of mindreading machines. If I’m right about this, then even if mindreading is possible, it cannot be achieved in such a way as to be uncontroversial and universally accepted, or commonly accepted enough to be a basis of policy or of economic science. In this way, it may be called impossible as a ground for economics, even if it is physically possible in itself.
But I concede that, properly speaking, my strong claims about impossibilities can only really stand if all these caveats are made.
No comments:
Post a Comment