In Harris' ,Waking Up, he explains the depths of the split brain and how one essentially obtains two distinct personalities. With that be stated and to answer the second question, I believe an individual can survive the split brain procedure and still maintain their numerical identity because the conscious and subconcious are the foundation of survival. For example, if an individual identifies themselves as a professional driver, then gets into a severe accident where he looses his memory and forgets how to drive, eventually he will be able to drive like before because his subconscious still has that memory stored, which will help him reach the maneuvering skills he had before the accident. Although he did not recall his skills, his subconscious
