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Next time you walk, notice each foot as it meets the ground and as you lift it and swing it. No need to look down. Don't bump anyone.
Steve Silberman’s articles have appeared in Wired, The New Yorker, and Time. He has written about autism, bacterial evolution, the Beat Generation, and the Grateful Dead, and is working on a book about neuroscience and human diversity. He and his husband Keith live in San Francisco.