There is a well known saying, “In the country of the blind the one-eyed man is king.” But is it true? What if there were a country where all the people were blind but had learned to cope with their condition and considered it normal? How would they respond if someone who could see came into their community and told them what it was like to see? Would they believe what he said or consider him a madman?
H. G. Wells wrote a story called “The Country of the Blind” which describes this situation. Here is Wikipedia’s summary of the plot.