Reading

At church on sunday we were shown a video about the work of the bible society, who translate the bible into different languages and formats. It made a big deal about the need for audio bibles, because of the many people who can't read. All fine, except that this message was conveyed entirely by pictures accompanied by written text and a musical backing track - no spoken words at all. Therefore assuming (I assume!) that anyone in a developed country would be able to read from a screen....