Awesome and productive suggestion. :D It seems we already have one piece of evidence but I would add: Often the people who live in the middle of nowhere are not thought of as smart, but they can drive or walk 10s or 100s of km through the wilderness and get to their destination. While those working high paying jobs in a city often use a GPS to drive anywhere off their usual route and never use any roads outside the main roads that are familiar to their route. I for example, can completely avoid rush hour going with the direction of rush hour, by taking a different road. This wouldn't work if most people in the city were good navigators (assuming they cared of course, but I would argue good navigators way-find more creatively even when they don't care much).