While the capability for organisms to work together is by no means novel, humans possess an unparalleled capacity for cooperation that seems to contradict Darwinian evolutionary principles. Humans often exhibit traits—such as sympathy, loyalty, courage, and patriotism—that prioritize collective well-being over individual fitness, and often cooperation occurs among individuals with no shared biological relation. This behavior, likewise, adapts in response to changing conditions, demonstrating the flexible nature of human cooperation.
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Source: Phys.org