Describe the "strange case of Julia North" discussed at the beginning of The Third Night of the Dialogue Concerning Personal Identity and Immortality. Who does Weirob think was the survivor of the Julia North operation and why? What are the two reasons that Miller and Cohen give for favoring the memory criterion of personal identity and why does Cohen think that in the case of the Julia North operation, the survivor has actual, and not merely seeming, memories of being Julia North? Finally, why does Weirob reject Cohen's claim that identity of brain is necessary for identity of person, and what reasons were given in class for thinking that Weirob is wrong to suggest that Cohen's claim is inconsistent with the common sense assumption that we can easily reidentify people over time by looking at their bodies.