In some instances you'll be able to walk barefoot, but at a certain cost (attention to terrain that you wouldn't need to pay so much attention with shoes). In o

In some instances you'll be able to walk barefoot, but at a certain cost (attention to terrain that you wouldn't need to pay so much attention with shoes). In other instances you won't be able no matter how much you train: go walk in roads or large stones in the summer, and you'll burn your feet. Walk in the snow, and you'll get frostbite. Walk in a forest full of fallen branches and sticks, and you'll get an injury. People didn't invent shoes because it was aesthetic, it was a necessity when adapting for certain terrains.