1July 9, 968, a laboratory in Maryland, USA, John? Calhoun founded "Universe 25", which put four male mice and four female mice together, provided mice with a lot of food and water, and also protected them from the outside world. However, Universe 25 has a disadvantage-limited space. It can only hold 3840 mice at most.
Universe 25 is actually a box. The height of the four walls is about1.3m, and the width of the bottom is about 2.6m.. There are many rooms for mice to move and live in.
But a few years after this experiment, all eight mice and their offspring died, which is really incredible. These mice didn't die because of lack of resources. The experimenter created a beautiful utopia for the mice, but the mice turned the utopia into hell.
Utopia refers to a utopian country and a beautiful society in human consciousness.
John? At the age of 26, calhoun studied the habits of Norwegian mice in Maryland. At the age of 30, he built a mouse city behind his home to study mice, but he found that every time the number of mice quickly exceeded 150, the number of mice would drop sharply, and it didn't start breeding until it was near extinction, as if there was an invisible pressure.
Calhoun was fascinated. He went on to build one mouse city after another, and there was always an invisible pressure as before. Calhoun believes that this pressure is caused by environmental factors. He believes that as long as there is a perfect environment, this kind of pressure may be reduced or disappeared.
As a result, he established many mouse cities.
When calhoun was 34 years old, the city of mice became a paradise for mice. All kinds of facilities are perfect and food is inexhaustible, but even so, this invisible pressure will eventually appear. Calhoun also wrote in his paper that "the behavioral consequences brought by the rising population density are inevitable".
1968, calhoun designed the most perfect city of mice-the 25th universe mentioned above. 19681in late October, the first mouse baby of four females and four males was born. After that, the number of mice will double every two months, which is the golden age of mouse utopia.
1August, 969, there were 620 utopian mice, and then invisible pressure appeared. Rats, like humans, live in groups. The number of mice has increased. Some mice can't find a mate, so they shut themselves up at home and don't associate with their families and neighbors. Male rats are concentrated in the center. They eat, drink and have fun all day, but they still feel anxious. And those old mice continue to multiply and expand their family power, but they also have some strange behaviors, constantly changing nests and kicking newborns out prematurely.
The growth rate of Utopia mice slowly slowed down, and those newborns who were kicked out prematurely spent their time eating, sleeping and entertaining, instead of fighting, mating and breeding. In the former mouse city, this invisible pressure will disappear after a while, but it is different in the 25th universe. Gradually, all the mice became newborns, unwilling to mate and reproduce.
1970 In May, the last mouse was born. From this time on, no mice are willing to reproduce.
/kloc-one day in 0/973, the last mouse in the 25th universe died, and the mouse utopia turned into nothingness.
And when we think about it carefully, this mouse utopia has a lot to do with our real world. For example, Japan's low-desire society, low fertility rate, a new generation similar to mouse utopia can not join the society.
But another marshmallow experiment proves that we are different from mice. Some of our ninjas can make us more calm, rational and understand the meaning of satisfaction, which is self-discipline in the words of now.
I am a person without self-discipline. Every time I play games and mobile phones, it will exceed the expected time or even several times the expected time, which also leads to the ups and downs of my academic performance, and it is difficult to be self-disciplined.
But our self-discipline is not available to mice, so we should use our self-discipline more. Only self-discipline can make our society not repeat the mistakes of the 25 th universe.