But who teaches the previous generations and how? Chicken or egg first? I think the origin is communication and memory. When a being (X) signals to another bei

But who teaches the previous generations and how? Chicken or egg first? I think the origin is communication and memory. When a being (X) signals to another being (Y) the origins of its pain (signal of increased death probability) and X and Y can remember this cause, they can begin to teach.