Ai 一下

AI Overview +5 Humans are likely to become even less hairy in the future due to the diminishing need for natural body insulation, which is now provided by technology like heating and clothing. While humans still have the genetic capability to grow dense hair, the reduced reliance on it for thermoregulation means that evolutionary pressure to maintain thick hair has lessened. This trend could lead to finer, sparser hair, or its complete disappearance over a very long timescale, though the exact outcome depends on continued environmental and social conditions. Why less hair is possible Reduced need for insulation: Modern humans have little need for dense fur because we wear clothes and use heating systems for warmth. Thermoregulation via sweat: Human body hair is sparse, allowing for efficient heat loss through sweat, which was crucial for early humans to stay cool in hot climates. Lack of evolutionary pressure: There is currently no significant environmental or sexual advantage for being more or less hairy, so evolution isn't being strongly directed in one direction. What could happen next Finer, sparser hair: The miniaturization of hair follicles may continue, leading to less visible, finer body hair. Complete disappearance: Over a vast period of time, if the conditions that favor less hair remain constant, humans could become virtually hairless.