structural:expansion, information:filtering
Background: relationship with language

According to most contemporary definitions, writing is a visual and tactile notation representing language. The symbols used in writing correspond systematically to functional units of either a spoken or signed language. This definition excludes a broader class of symbolic markings, such as drawings and maps. A text is any instance of written material, including transcriptions of spoken material. The act of composing and recording a text may be referred to as writing, and the act of viewing and interpreting the text as reading.

The relationship between writing and language more broadly has been the subject of philosophical analysis as early as Aristotle (384–322 BC). While the use of language is universal across human societies, writing is not—having first emerged much more recently, and only having been independently invented in a handful of locations throughout history. While most spoken languages have not been written, all written languages have been predicated on an existing spoken language. When those with signed languages as their first language read writing associated with a spoken language, this functions as literacy in a second, acquired language. A single language (e.g. Hindustani) can be written using multiple writing systems, and a writing system can also represent multiple languages. For example, Chinese characters have been used to write multiple languages throughout the Sinosphere —including the Vietnamese language, from at least the 13th century, until their replacement with the Latin-based Vietnamese alphabet in the 20th century.

In the first several decades of modern linguistics as a scientific discipline, linguists often characterized writing as merely the technology used to record speech—which was treated as being of paramount importance, for what was seen as the unique potential for its study to further the understanding of human cognition.