Brain Transplants

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Time line running from earlier to later times


T1                                          T2


Consider two people, 


Person 1    Brain 1                         Brain 1
            Body 1                          Body 2

Person 2    Brain 2                         Brain 2
            Body2                           Body 1



How do we understand personal identity at T2?


Is     Brain 1
       Body 2   =   Person 1		

Is     Brain 2
       Body 1   =   Person 2

Or has neither Person 1 nor Person 2 survived. (All that has survived are body parts.)