english: 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.
non_english: Toen één van mijn studenten,  die nu instructeur is, blind werd, merkte hij na een paar maanden dat hij in zijn huis met drie verdiepingen alles kon horen wat er in het huis gebeurde: gesprekken, mensen in de keuken,  in de badkamer, enkele verdiepingen verder,  enkele muren verder.