It has been estimated that a billion people - one-fourth of the world's population - are unable to read.
Le fa go ntse jalo, jaaka go boletswe mo setlhogong se se fetileng, bagolo ba ka nna dimilione di le sekete - mo e batlileng e nna nngwe thatarong ya baagi ba lefatshe lotlhe - ga ba itse go bala le go kwala.