The Proto-Human language (also Proto-Sapiens, Proto-World) is the hypothetical most recent common ancestor of all the world's languages.
The concept of "Proto-Human" presupposes monogenesis of all recorded spoken human languages. It does not presuppose monogenesis of these languages with unrecorded languages, such as those of the Paleolithic or hypothetical Neanderthal languages. Advocates of linguistic polygenesis do not accept the notion of a fully developed Proto-Human language and consider the world's language families independent developments of a proto-linguistic form of communication used by archaic Homo sapiens.
If the assumption of a "Proto-Human" language is accepted, its date may be set anywhere between 200,000 years ago (the age of Homo sapiens) and 50,000 years ago (the age of behavioral modernity).
Read more about Proto-Human Language: Terminology, History of The Idea, Date and Location, Characteristics, Criticism
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“If fancy then
Unequal fails beneath the pleasing task,
Ah, what shall language do?”
—James Thomson (1700–1748)