What does the nonbranching proposal say about split-brain patients?

Initial Post (approx. 300 word)

1. Evidence of critical thought
2. Evidence of a complete understanding of the relevant theories and concepts
3. Grammar, spelling and length

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Initial Post

What does the nonbranching proposal say about split-brain patients? Are there two people present in the one body? If so, is either identical with the person who occupied the body before the operation? (complete after reading 4.3)