Your argument fails to acknowledge that the brain is not the soul, nor the mind, nor the spirit, nor the consciousness of a human being. People have come back to life after being put in the morgue and a dead certificate issued. This is an area of knowledge not well understood by science if at all. We have some solid research now that shows the consciousness continues to live after the death of the brain and body. I can’t tell you how consciousness and brain interact and neither can anyone else. Science assumes it knows things it doesn’t even have a clue about all the time.