Daniel Lieberman, a professor of human evolutionary biology at Harvard University, says:
People have been running barefoot for millions of years and it has only been since 1972 that people have been wearing shoes with thick, synthetic heels.
Well, they weren’t running on asphalt for million years. And they weren’t running for the pleasure or the healthy effect of it either, I guess.
There are a few other things I disagree with in the article, but it makes an interesting read non-the-less.