I can find few things more beautiful or intellectually profound than finding the basis for our humanity...
-Neil Shubin
Paleontologist and professor of anatomy by trade, Neil Shubin takes an interdisciplinary look at how human beings evolved in his book, Your Inner Fish: A Journey into the 3.5 Billion Year History of the Human Body. He shows clearly how scientists in seemingly unrelated fields - paleontologists and genetic researchers for example - often reach similar conclusions despite their very different methodologies. The cumulative research adds up to compelling evidence that the "theory" of human evolution is about as solid as the "theory" of gravity. In other words, we can take it as fact.
One of the most interesting points made in the book: We human beings are not perfectly adapted to our environment, and neither are the other living creatures on our planet. Evolution is effective but messy. Remnants of our previous incarnations can still be found in our bodies, and some of our adaptations have resulted in problems ranging from hiccups to hernias. "Each of these examples," writes Shubin, "show that we are not designed rationally, but are products of a convoluted history." He compares the human body to an old building that has continually been modified and upgraded, as opposed to a new building with a clean construction that has been designed for maximum efficiency. And he continually reminds the reader that the same component remnants found in our bodies can be found in the bodies of many other creatures:
When you see these deep similarities among different organs and bodies, you begin to recognize that the diverse inhabitants of our world are just variations on a theme.
Your Inner Fish is a fairly easy book to read. It's only 201 pages and is filled with interesting illustrations. Yet, Shubin packs a ton of information into its pages. If you're interested in learning about how you came to be you, this book offers some great explanations. I can't help but remark that it is simply one more nail in the coffin of Intelligent Design. However, it is more than that, being both entertaining and thought provoking. I highly recommend it.
I read Your Inner Fish for a men's book club my friend Ted and I just got started. Our next book is Animal, Vegetable, Miracle by Barbara Kingsolver.
Links:
Your Inner Fish: A Journey into the 3.5 Billion Year History of the Human Body
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