hat person B has green eyes and person C has green eyes. Person B and person C observe that person A has green eyes. No villager leaves during the first day. Person B and person C conclude that that there are at least two green eyed people in the village. Person B looks into person C's eyes. Person B knows that person A and person C have green eyes, and person C knows that person A and person B have green eyes, but it is still possible that person B or person C has brown eyes. As a result, no villagers depart on the second day. On the third day, observing that no villagers left the village, then