philosophy

They don't become stupid. People are simply divided into three categories (based on the level of absorption of biogeochemical energy from living matter in the biosphere): passionaries (those who absorb more energy than needed for normal life, and it overflows from them) - they usually make up 5-10%; harmonious people (consume exactly as much energy as needed for normal life) - they make up 80-90%; subpassionaries (consume less energy and try to compensate for its deficiency at the expense of others) - they also make up 5-10%. And a person cannot act in a way that is not consistent with their energy level.