"Echolocation" A blind person can learn to use sound to find out where things are. Eddie is already learning to use little clicking sounds, or tapping his cane, and listening really carefully. When the sound hits something - like a wall or a tree - it bounces back to his ears. The echo helps tell him how close or far away a thing is. With practice, your ears get really good at catching those echoes and telling your brain what's around you. You'll often see our kids running down a hallway or thro