Definition of Life and Human

Cultural gene is similar with biological gene, which carries information of creatures. But the essential character of gene is not information. Creatures can evolve to form an amazing world. The key is breeding. In China, there is a story called the race between tortoise and rabbit. When the rabbit sees the tortoise crawling slowly, he sleeps half way. When he wakes up, the tortoise has reached the end. It doesn't matter how slowly you go as long as you don't stop. This is the answer to the mystery of life.

Non-living things can also evolve continuously.From small molecules to macromolecules, from simple structures to complex structures, any material will spontaneously mutate. However, the number of complex structure bodies generated by spontaneous mutation is very small, and complex structures are easily disintegrated. Once the complex substances are all disintegrated, the process of evolution has to start again. So, until now, non-living things still have only simple structure. After macro- molecules had got self-replication function, the number of individuals with complex structures could greatly increased. Although there were always many individuals with complex structures that continue to disintegrate, the complex structures always had survivors, so the evolu- tionary process could continue, with the structure of the organisms more and more complicated. It doesn't matter how slowly you go as long as you don't stop.

The source of biological complex structure is also spontaneous mutation and natural selection. This is the same as non-living things. The only difference is that biology can continue to evolve, and non-livings always start from beginning, so the scene we see today appears. Creatures have countless magical functions, for example, the function of maintaining one's temperature, the immune function, run, fly, and even think and innovate. Structure determines function. With ever-complicated structures, all amazing functions can be naturally produced. So the root cause of biological evolution is self-replication, not mutation and natural selection. Although mutation and natural selection are indispensable, they are not scarce resources. Non-living structures are destroyed if they are not adapted to the environment. This is the same as living things. The only difference between non-