h2g2 The Hitchhiker's Guide to the Galaxy: Earth Edition

You make the statement: "It was through culture that humans started to live in groups." I would however like to draw your attention to the fact that all primates have a social organization and do not exist as single individuals, except, perhaps, the orangutan. Otherwise it may be more accurate to assume that culture altered the social organization that already existed.

Another inaccuracy is the claim that only humans have culture. But by the definition of culture that you yourself give this is not limited to verbal communication, however, many of our fellow primates currently pass down learned information to their offspring that is subsequently used. The actual intelligence needed to accomplish this task is in fact relatively low, though still light years beyond what a Canadian goose, a wombat, a grasshopper, or an E. coli could do.

I agree that to claim that only humans pass on knowledge (culture) is erroneous. Following various famous experiments involving teaching chimpanzees and gorillas sign language, there are now succeeding generations which have also learned to sign from their parents. Some behaviour is innate, but most is learned.