Even tribes way back when would still of worn some form of protection for certain terrain and/or conditions. There's plenty of evidence around such as animal skin shoes and hardened leather sandals. The main point is that they weren't made to "correct" or "improve" the biomechanics of how we walk or run. They were simply designed to keep feet warm in the winter and "protect", not cushion the sole over rough terrain. With VFF’s, there is nothing in their design made to help with “pronation” etc, they just offer protection. Admittedly as soon as you put anything on your feet, it will affect the natural biomechanics, but they’re a hell of a lot better then heavy trainers!

So...it's not really all about going barefoot (although if you can, do!), more about getting our feet out of the shoddy casts we've been made to believe are necessary to run and enjoy yourself

Just a thought