John B. Calhoun’s Mouse Utopia Experiment and Reflections on the Welfare State
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John B. Calhoun’s Mouse Utopia Experiment and Reflections on the Welfare State
The turning point in the "mouse utopia" project—a behavioral research experiment that provided mice all the food and water they needed and ensured no predator could gain access—occurred on Day 315. Some of the aberrations recorded may surprise you.
Feb 6, 2024
John B. Calhoun Calhouns Mouse Utopia
In 1968, ethologist John B. Calhoun created "Universe 25." It was a mouse utopia. unlimited food, unlimited water, zero predators, and perfect climate control. It was designed to support 3,800 mice. But the population peaked at just 2,200 and then collapsed to zero. Why? Because without the struggle to survive, the mice broke psychologically. They formed violent gangs, mothers abandoned their babies, and a group called "The Beautiful Ones" emerged—males who stopped fighting or mating and did not
0:11
In 1968, ethologist John B. Calhoun created "Universe 25." It was a mouse utopia. unlimited food, unlimited water, zero predators, and perfect climate control. It was designed to support 3,800 mice. But the population peaked at just 2,200 and then collapsed to zero. Why? Because without the struggle to survive, the mice broke psychologically. They formed violent gangs, mothers abandoned their babies, and a group called "The Beautiful Ones" emerged—males who stopped fighting or mating and did not
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