little steps, Big Steps... Large Beats, small beats

Do you ever walk down the street, on your way to your next appointment, and think about every single step that you take?

When we first learn to walk, it certainly seems like a lot of thought is put into every little motion. Not only that, but fear must play a key role in it as well. Fear of what though? Falling down? Tripping? What is it about a child that makes them so fearless to try new things? Is it the ignorance and implications of failure?