Likewise, if Grug is shouted at by his father when he is young, he will learn that behavior and shout at his own children, unless he gains another father figure later in life to imitate. The abusive tendencies are passed on. Memes are passed on over generations, cross-pollinate, and mutate with each generation, and are therefore exposed to the same evolutionary pressures as every other aspect of an organic system. This forms the foundation for culture. Please try to understand. <|endoftext|> 