If someone offered this brain a choice between pleasure for this brain and pleasure for that brain, I would no doubt choose the former.
Does that mean that nothing but this brain is me?
It might also turn out that if someone offered my right brain hemisphere a choice between pleasure for my right-brain and pleasure for my left-brain, I consistently choose pleasure for my right hemisphere. If that turns out to be true, does that mean that nothing but my right hemisphere is me? (If the analogous thing also turns out to be true for my left hemisphere, does that also mean that nothing but my left hemisphere is me? Does it mean there are two of me that don’t share an identity? I’m not sure that question even means anything.)
If someone offered this brain a choice between pleasure for this brain and pleasure for that brain, I would no doubt choose the former.
Does that mean that nothing but this brain is me?
It might also turn out that if someone offered my right brain hemisphere a choice between pleasure for my right-brain and pleasure for my left-brain, I consistently choose pleasure for my right hemisphere. If that turns out to be true, does that mean that nothing but my right hemisphere is me? (If the analogous thing also turns out to be true for my left hemisphere, does that also mean that nothing but my left hemisphere is me? Does it mean there are two of me that don’t share an identity? I’m not sure that question even means anything.)