But common sense suggests that illiterate adults face obstacles that can lead to trouble.
Functionally illiterate adults have a profound impact on Virginia's economy.
Up until her death, she continued to receive students at her home, helping illiterate adults and poor children.
Charts are available for very young children or illiterate adults that do not require letter recognition.
It is not simply that illiterate adults cannot read books or newspapers.
In absolute terms the illiterate adults have grown from six to nine million persons.
Canadian literacy groups hope his example will inspire other illiterate adults.
A reading center was established at the library in the late 1980s, to serve the needs of illiterate adults learning to read.
There are 880 million illiterate adults, two-thirds of whom are girls and women.
This is generally evident from the fact that of 960 million illiterate adults in the world, two-thirds are women.