During the personal evolution that is ontogenesis, many humans gradually learn that, though the process of perceiving places them at the centre of their own personal world, they are not at the centre of the social-semiotic world, but rather, one of many in multiple networks of interdependent interrelations. Similarly, during the cultural evolution that is phylogenesis, many humans are gradually learning that, though the process of modelling positions humanity at the centre of perceivable world, humans are not central but rather one of many phenomena in multiple networks of interdependent interrelations. For example, in the Western tradition, there has been a gradual displacement of humans from the centre of the world: the Mediterranean from the middle of (the surface of) the Earth, the Earth from the centre of the solar system, the solar system from the centre of the Milky Way galaxy, in a universe that has no centre.