Is There Separately Existing Entities?

We know from operations on apileptics that we only need one hemisphere of our brain to survive. Some people have regained all functionality with just one hemisphere, and there's certainly no reason to believe that they become different people. So in other words, pick a hemisphere my brain, destroy. I'm still wess. And the question is, sdid i survive? Did original west with two hemispheres die? And now there's two new people who are exactly like him. The pain and the person whoare in pain do not change, no matter how much qualitative you do,. No matter how much brain change you do. We consider n arto on split brains.