Human bodies carry remnants of our evolutionary past, like the palmaris longus tendon, goosebumps, and wisdom teeth. The palmaris longus, a tendon once crucial for gripping in tree-dwelling ancestors, is now mostly unnecessary, with some people lacking it entirely.
Goosebumps, a reflex triggered by cold or fear, were once useful for keeping warm or appearing larger to predators. Wisdom teeth, which helped our ancestors chew tough plant matter, are now less needed due to smaller jaws and dietary changes, often causing dental problems today.
These evolutionary traits, though no longer essential, are subtle reminders of how humans have adapted over millions of years. Evolution is an ongoing process, and features like these show how gradual change continues to shape us.
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