Pretty smart design

Study on evolution of running finds going barefoot good for the sole, better for the heels - latimes.com:

WASHINGTON (AP) — Harvard biologist and runner Daniel Lieberman had a simple question: "How did people run without shoes?"

The answer he got is: Much better.

At least running barefoot seems better for the feet, producing far less impact stress compared to feet shod in fancy, expensive running shoes, according to a study by Lieberman in Thursday's issue of the journal Nature. The study concludes that people seem to be born to run — barefoot.
. . . .
Tonino said cushioned running shoes work against evolution which developed the foot properly for endurance running.

(emphasis added) Hmmmm, maybe such shoes work against the foot's design, at best they work against the foot's structure.