Michael Chorost became a cyborg on October 1, 2001, the day his new ear was booted up. His hearing was routinely upgraded with new software. A brilliant dispatch from the technological frontier, Rebuilt is also an ode to sound. Whether Chorost is adjusting his software in a desperate attempt to make the world sound “right” again, exploring the neurobiology of the ear, or reflecting on the simple pleasure of his mother’s voice, he invites us to think about what we hear — and how we experience the world — in an altogether new way.

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