Literacy requires more than mere letter recognition and the ability to read or hear with understanding the most common English words.
Literacy requires cultural knowledge.
The purpose of the literacy capsule feature of the American English Doctor is to present information in small doses. These factual snippets convey general knowledge that every literate person should know in order to make sense of the flurry of words that surround us every day of our lives.
Sometimes the capsules are complete in themselves. Sometimes they contain links to longer articles that provide detail and illustration.
