Personal mobility is something that most people take for granted. For my parents and other blind people, their ability to travel by themselves with their white canes is crucial for their independence. By "mapping the environment" and by memorizing physical directions, my parents can commute to work like everyone else.

On the morning subway ride to work, Gail knits a blanket while other people read. Knitting is a productive and satisfying hobby of Gail's; dozens of people have received blankets and sweaters from her as presents.

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