Echolocation was a topic I found quite intriguing to read about in the book. When you are a person who does not use echolocation, it can be easy to think, "How does one successfully do this?". Echolocation is used by those who are visually impaired. They produce clicking sounds to determine how close they are to surrounding objects.
I had an experience with a person who uses echolocation at my job recently. I am a hostess at a restaurant in Atlantic City. A lady entered the restaurant and right away I could tell she was visually impaired. She was navigating with a 'white cane'. However, she was only holding the cane, not moving it around as some visually impaired people do. As she approached the host stand I could hear her making clicking noises, and to my surprise she stopped about a foot in front of the host stand and started talking. It was amazing to see what we have learned about happen right in front of me.