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We've Been Evolving For Millions Of Years, So Why Are Our Bodies So Flawed?

In his debut book Evolution Gone Wrong, Alex Bezzerides mixes the technical anatomical stuff we need to know with vivid examples and humorous phrases — in offering us some answers.
<em>Evolution Gone Wrong: The Curious Reasons Why Our Bodies Work (Or Don't)</em>, by Alex Bezzerides

We humans have been evolving for millions of years and — as any good biologist will tell you — in response to pressures in our environment, we are evolving still.

So how come our bodies are so flawed? Why does sharp vision so often elude us, for instance? Why do our backs hurt so frequently?

The theme of Alex Bezzerides' ) is that we experience these and other embodied challenges — teeth that require braces, feet that acquire bunions, knees that blow out — not of evolution, but of it. We are animals, and animals' early evolution in the ocean, and our primate lineage's transition from the trees to the

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