Therefore, it would be logical to say that as a corollary to ‘all human beings related through common ancestry’ all the 7000 languages being spoken and many others that have become extinct should also be related through common ancestry. However, the majority of linguists do not believe in a common origin of languages due to the absence of any ‘fossils records.’ Amongst the linguists there is consensus on multiple centers the origin of human languages as well as on the presence of 17 distinct language families. Attempts have also been made from time to time to arrange all the languages in evolutionary trees, first constructed by the 19th century linguist Augustus Schleicher. Prima facie, the tree of biological evolution as worked out by the molecular biologist should correspond to the tree of language evolution as traced by the linguists and the migration routes of the human species worked out by the biologists and the linguists should also overlap. However, a comparative study of the biological and linguistic evolution trees and migration routes reveals perplexing non-correspondences as well as some unexplained gaps.
(To be continued)