The left hemisphere acts as an "interpreter," watching the actions and behaviors of the body and assigning a coherent narrative to these events. And the left hemisphere works this way even in normal, intact brains. Hidden programs drive actions, and the left hemisphere makes justifications. This idea of retrospective storytelling suggests that we come to know our own attitudes and emotions, at least partially, by inferring them from observations of our own behavior.
David EaglemanNothing is inherently tasty or repulsive - it depends on your needs. Deliciousness is simply an index of usefulness.
David EaglemanTo a space alien or a German Shepherd dog, two humans would be indistinguishable, just as attractive and unattractive space aliens and German Shepherd dogs are difficult for you to tell apart.
David Eagleman