How do you include that fact in a metric other than by showing a positive value for positive outcomes?
By extrapolating from the choices of the people involved? It seems to me that people with no legs have just as much interest in staying alive as people with two legs. That doesn’t mean they have an interest in staying no-legged rather than becoming two-legged; but I don’t consider “give Bob his legs back” equivalent to “kill Bob and save Alice, who has legs”, either.
By extrapolating from the choices of the people involved? It seems to me that people with no legs have just as much interest in staying alive as people with two legs. That doesn’t mean they have an interest in staying no-legged rather than becoming two-legged; but I don’t consider “give Bob his legs back” equivalent to “kill Bob and save Alice, who has legs”, either.