Dear OliverWhen Susan Barry first wrote to Oliver Sacks, she never expected a response, let alone the deep friendship that blossomed over ten years of letters. Sue, herself a neuroscientist, wrote to share an extraordinary development in her own medical history. Born with problems with her vision, Sue had been told she would never acquire the ability to see in 3Dyet she did, a development at odds with decades of research. Within days, Oliver replied, "Your