The best way to explain it is to work our way backward. If you look at highways, they followed two-lane roads. Two-lane roads followed dirt roads. Dirt roads followed the white man’s trail. The white man’s trail followed the Indian’s trail. Indians followed the animals. Animals followed water. Animals are the original trailblazers. The white man gets all the credit for ‘discovering’ the trails, but that couldn’t be more inaccurate. They simply followed along well-established routes that had been traveled on for probably hundreds of years. Who knows, maybe thousands.