The Evolution of Traumatic Brain Surgery

"I think if you start thinking too much about what does it mean to be a continuous person that this is a conclusion that you are pushed towards unwillingly" "The brain is just a crazy very difficult to understand also very plastic and flexible organ. This whole video fell out of what was supposed to be a much bigger broader topic which is more about how the idea of what you think of yourself as as this stream of thoughts isn't even exactly correct"  There are several species particularly aquatic species that can sleep one hemisphere at a time but there are animals that essentially never really fully go to sleep, he says.