Christof Koch

The definition of consciousness is continually under debate. But Christof Koch—the Chief Scientist and President of the Allen Institute for Brain Science—argues that it’s really quite simple: consciousness is the feeling of being alive. From that definition come two important (but controversial) conclusions. First, that since many (or even all) animals experience life in some degree or another, they are conscious. And second, that no computer will ever be able to truly experience consciousness.