یکی از شاگردانم، که حالا خودش مربی هست، هنگامی که دیدش را از دست داد، بعد از چند ماه او در خانه سه طبقه‌اش زندگی می‌کرد و متوجه شد که می‌تواند همه صداها را در خانه بشنود: گفتگوها، وجود افراد در آشپزخانه، در حمام، چند طبقه دورتر و چند دیوار دورتر. 
One of my students, who has now become an instructor, when he lost his vision, after a few months he was sitting in his three story house and he realized that he could hear everything going on throughout the house: conversations, people in the kitchen, people in the bathroom, several floors away, several walls away. 