People have wondered for centuries if we can establish a
Proto-World language from which all human
languages descend.
A famous example stating this has been the
Biblical story about the
Tower of Babel.
The American linguist
Joseph H. Greenberg claimed that long-distance relationships can be shown by applying an approach he called
mass comparison[?]. The languages are compared by using a limited set of words (including function words and
affixes) simply by means of counting
cognates. He used this method to establish a classification of
African Languages. His work has generated considerable interest outside the
linguistic community. It is still much debated.
Traditional historical linguistics state that so far it has been impossible to show that all the world's languages are genetically related. Critics say that from the purely statistical point of view, among any two unrelated languages, there would be more than 40% of words sharing a roughly similar sound and meaning. Therefore, the concept of comparing languages basing only on general comparisons between their vocabularies is considered flawed.
See also: Nostratic language, false cognate.
Hans Henrich Hock and Brian D. Joseph,
Language History, Language Change, and Language Relationship: An Introduction to Historical and Comparative Linguistics. Mouton de Gruyter, Berlin 1996; chapter 17
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