The Boundary Between Selfishness and Selflessness

I originally wanted to call it a work of understanding the subtleties, or to see the big things from the small. But both of these topics were already written by authors, so I gave up. I want to write it in a colloquial, informal, easy-to-understand way with a touch of literature and art. There is a scientific question called Why are people afraid of death? What is this underlying logic? I can't answer this question from the front, but I can answer this question from the side, because all those who are not afraid of death are dead, and those who are not lustful are extinct. This is a problem of the underlying code and underlying logic. Well, the existence of the right is reasonable, that's what it is. If we magnify this problem, what will be the result? Are individual greed for life and fear of death the same thing as collective greed for life and fear of death? Also, well, these two genes may be in conflict with each other, the optimal solution for individuals and the optimal solution for the collective. I won't describe too many details, because processing information itself is a pain. Unless the information is necessary, you can read other books. Other books have already written everything that should be written. The characters are just symbols, which are very unimportant here. Don't expect too much from my article, I'm just an ordinary person.