Earlobe's biological function remains a mystery, with current research suggesting it may be an evolutionary remnant rather than serving a significant purpose. While some theories propose thermoregulation or sensory roles, these are largely unsubstantiated. Evolutionary biologists posit that earlobes might persist due to genetic drift or as a developmental byproduct, a concept known as a spandrel, rather than through direct natural selection for a specific function. AI
RANK_REASON The article discusses evolutionary biology theories about a human anatomical feature, which falls under commentary rather than a core AI topic.
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