An experiment was conducted on rats. To investigate their ability to swim, a researcher from behavioral biology laboratory of the Faculty of Nancy, Didier Desor, has met six in a cage with one end leading to a pool that they had to cross to reach a feeder distributing food. We quickly found that all six rats were not foraging while swimming together. Roles appeared that they had distributed as follows: two swimmers exploited exploiters both non swimmers, a swimmer and a non-autonomous swimmer scapegoat. Both were used to collect food by swimming underwater. When they returned to the cage, beating both the exploiters and sank his head under water until they let go of their loot. Only after having fed the two exploiters operated under both could afford to consume their own kibble. The exploiters do not swim, they contented themselves with beating swimmers to be fed.
autonomy was a strong enough swimmer to bring her food and go to feed the exploiters of his own labor. The whipping boy finally was unable to swim and was unable to scare the exploited, then picked up the crumbs in the fighting. The same structure - both operated two exploiters, an autonomous and a scapegoat was found in twenty cages where the experiment was repeated.
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