english: You know, if you actually think about it, if somebody is totally blind -- a guy yesterday did a demonstration in one of the rooms, where people had to close their eyes and they could just hear things.
non_english: Ak sa nad tým zamyslíte, ak je niekto úplne slepý... Včera jeden pán predviedol ukážku, pri ktorej ľudia museli zatvoriť oči a iba počúvali.