If you dropped a dozen human toddlers on a beautiful Polynesian island with shelter and enough to eat, but no computers, no cell phones, and no metal tools, would they grow up to be like humans we recognize or like other primates? Would they invent language? Without the magic sauce of culture and technology, would humans be that different from chimpanzees?
Nobody knows. (Ethics bars the toddler test.) Since the early 1970s, scientists across the biological sciences keep stumbling on the same hint over and over again: we’re different but not nearly as different as we thought. Neuroscientists, geneticists, and anthropologists have all given the question of human uniqueness a go, seeking special brain regions, unique genes, and human-specific behaviors, and, instead, finding more evidence for common threads across species.
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