When early humans stood erect over the African savannah, our improved vantage point gave more than views of prey and predator, berry bush and honeybee hive, nut tree and watering hole; we saw possibilities. We saw the horizon stretching out until what appeared to be infinity. We saw sunsets and sunrises, mountains and valleys, stars and constellations and galaxies. The world grew. And we viewed this massive world with a childlike curiosity that made just looking insufficient. We had to touch, visit, and experience it.
So we walked.