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The human body bears traces of our evolutionary past from "summary" of The Greatest Show on Earth by Richard Dawkins

The human body is a walking museum of our evolutionary history. Every step we take, every breath we breathe, we are reminded of our ancient ancestors and the long journey they took to bring us to where we are today. From the structure of our bones to the way our brains are wired, the evidence of our past is written in every part of us. Our hands, with their delicate fingers and opposable thumbs, are a testament to our primate heritage. They are perfectly adapted for grasping and manipulating objects, a skill that was essential for our ancestors as they navigated the trees and foraged for food. Even the way our fingers are arranged, with the longer fingers in the middle and the shorter ones on the outside, is a trait we share with our primate relatives. Our eyes, too, bear the marks of our evolutionary past. The structure of our eyes is remarkably similar to those of other mammals, with a lens that focuses light onto a retina lined with photoreceptor cells. This design has been honed over millions of years of e...
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    The Greatest Show on Earth

    Richard Dawkins

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