Imagine the astonishment felt by neuroscientist Rodrigo Quian Quiroga when he found a fantastically precise interpretation of his research findings in a story written by the great Argentinian fabulist Jorge Luis Borges fifty years earlier. In this BIT, Quian Quiroga explores real-life cases that recall Borges's fictional "Funes the Memorious," investigating a man who couldn't forget, and another who could not form new memories.