I am a firm believer that design reveals intention. The mind of an inventor is revealed through his inventions. A spoon is designed with the intention to help us eat conveniently. A car is designed to move on road. An aeroplane is designed with aerodynamic considerations because the intention is for it to move in the air.
We are designed to walk upright on two legs and our hands are designed to do many things but not to walk. I believe that our eyes are set on the front of our faces because we are designed to face the direction of our walk: before the legs move, the eyes have already seen the path.