The population has reached the limit of the earth s capacity, what did the dark experiment of 50 yea

Rats that breed infinitely in a space that is meters long and meters long, have no worries about food and clothing, no natural enemies and no disasters, only space limitations, this place, which John Carr called "the utopia of rats", simulates limited space and other perfect earths, but the final result is the result of just wanting to wait for death slowly.

This dark experiment 50 years ago came to the conclusion that when the population reaches the limit of this capacity of the earth, then there will be some special dangers on the earth, and it is very likely that it will be destroyed.

More than half a century ago, John Calhon of the United States once considered the problem of population limits, and he built a utopia of mice, where rats were allowed to reproduce freely, and finally the experiment could basically meet the current population of the earth. In other words, if the population density of human society reaches the point of collapse one day, the social structure of human beings will also collapse, and it may also lead to the extinction of the entire human group.

I just explained it from the humanities, but I didn't notice that it was a linguistic question, so I deleted the previous ones).

This passage is erroneous in its assumption: "The earth's population will reach an astonishing level, and the earth's surface will be filled with 100 people per square meter". "Earth's population" refers to quantity, while "100 people per square meter" refers to density, the latter is used to describe the former, the error is that the units are not uniform, so just change "Earth's population" to "population density".

The whole sentence should be changed to read: If the population is not controlled, in about 900 years, the population density will reach an alarming level, and the average square meter of the earth's surface will be filled with 100 people, how will humanity survive?

Haha, what you are talking about is a mathematical problem, not a social problem, if people do not control the population, it will cause natural elimination and human disaster! But it's definitely not up to the number you said!

Think about it, before human beings reached so many, what they ate and what they worn, people had long been unable to eat and wear, and there were large-scale wars in human beings, could they still see so many people?

If it can really reach so many people, it means that human technology has solved everything, so why limit it?

That's not a problem. 900 years later, if human beings do not develop the technology of interstellar migration and immigrate to other planets, they will also fight for limited resources, and after several nuclear wars, it is estimated that human beings on Earth will be extinct long before they are crowded with 100 people per square meter.

How do you stand with 100 people per square meter?