The chapter, figuratively and literally, refer to the migration of sapiens to different parts of the world. In the outset, physical barriers like oceans hindered the movement of sapiens to other places or continents. Since sapiens were creative and innovative, they had to develop ways of accessing other parts of the world. The ability to think creatively enabled sapiens to navigate through the physical features like oceans until it reached other parts of the world. It is on account of cognitive revolution that mankind was then able to spread across the world and indeed that is why people are settled across Europe, Asia, America, Asia and Africa.