American behavioral scientist John Calhoun’s terrifying experiment.

Although the area was large in the colony and the houses were scattered throughout it, the scientist noticed that the mice were concentrated in the houses near the food sources, and because of this congregation around the food sources and housing near it, the mating rate among them decreased, and thus the number of offspring decreased by one third and became a social disorder among the mice. around food sources and living in houses near it, the mating rate among them decreased, and thus the number of births decreased to one third, and there was a social imbalance among the mice, and a strong dominant group of mice, estimated at one third, emerged to dominate the world of the group, while the remaining two thirds became weaker than their fathers before them, i.e. (Rakhum) And the bonding between the mouse community, team spirit and communication skills began to disappear, and here the mouse paradise began to collapse irreversibly On the 315th day, the behavior of high-status males and low-status males became very clear, and after the weak male mice were rejected by the females and rejected by the rat community, they withdrew from mating completely and isolated themselves from the rat community, sleeping and eating alone and fighting alone. On the other hand, the alpha males became more aggressive and became violent without any provocation or motive and raped other rats. On the other hand, the outcast beta males became passive and timid towards any resistance to the violence that was inflicted on them until it reached cannibalism, and because the alpha mice abandoned their role in protecting the female mice, some females began to defend their nests and their behavior became aggressive. And others moved away from the role of motherhood in order to devote themselves to feeding themselves, which reduced the desire of female mice to reproduce because they cared about food and protecting themselves from male mice, so the mortality rate among infants increased to 90% among young mice, the scientist called this stage the stage of stagnation. Stagnation, and on the 560th day, the death stage came, as the death rate reached 100%, and mating stopped after a long stage of violence and lack of reproduction, and a new generation of mice appeared in the colony, which did not see any natural relationship in mating, reproduction or paternity, and this new generation of mice did not know Nothing in life except eating, drinking and taking care of himself, and caring about his external shape and unfluffy skin and joyful joy that he survived the conflicts, and the world called Calhoun this generation a beautiful mouse, and yet this type of mouse did not make any social contribution to society other than eating, drinking and caring about his appearance.

Calhoun divided death in rat society into two parts: The first death is the loss of purpose in life, as there is no marriage or raising a young generation of rats, and this was at the height of the availability of resources, and the second part of death is the end of life after a new generation of rats does not know its role in the rat community: It is the end of life after a new generation of mice who do not know their role in mouse society because they have not seen fatherhood, motherhood or roles in mouse society, and on day 920, the number of beautiful mice and beautiful mice exceeded the number of alpha mice, and they became more than mice that formed gangs. Where the highest number of mice reached 2200, although the colony can accommodate 3000 mice, which is much less than the capacity of the colony, and despite the availability of resources for this type of beautiful mice that remained in the colony, but after a short period of time, the mice became extinct, the mouse paradise disappeared, and no mouse remained alive.