Dawkins’s research is primarily in genetics. He has argued that all life relies on replication . But unlike cells, ideas do not rely on a chemical basis for survival. They begin from a single location—the brain—and spread outward, jumping from one vessel to another, battling for attention. Some ideas are more successful, which may be due to an element of truth they carry, while others slowly die out. Some may not be accurate, but society has accepted these ideas for so long that they are just accepted (think about pictures of Jesus or George Washington; while these may not be what they actually looked like, almost all art now portrays these men in the same way).