Complex means here the degree in which the organism can manipulate its surroundings.
- Single celled organisms can be called 'simple' in that context. They can hardly manipulate their surroundings by them selves.
- More importantly, they can't make conscious decisions to manipulate things.
- Our brain is -you will probably agree- , more complex than any single celled organism and it allows us to manipulate our surroundings to a greater degree than single celled organisms.
- Now how complex would a being be, that can not only manipulate the universe, but CREATE it out of no where?