I would be very careful of any claims made by barefoot shoe manufacturers regarding it being more natural/it's how we evolved, especially if running on roads or

I would be very careful of any claims made by barefoot shoe manufacturers regarding it being more natural/it's how we evolved, especially if running on roads or other hard surfaces. While I agree they can be beneficial in small doses and/or on natural surfaces, I'm not sure the human foot evolved to run on concrete surfaces.