Systems dynamics applied to reconstruct the dispersal of modern man on Earth and language patterns during the last 120,000 years

Movement of populations and languages in Eurasia has been mathematically modeled. The movements are explained by primarily demographic expansion caused by climatic change in the historic past, ecological factors and the introduction of agriculture from the Near East and Southeast Asia into the neighboring territories. This study use model outputs for the time period 120,000 BC-1,500 BC to investigate the relation between language families such as Nostratic, Austric and Dene-Sino-Caucasian, the approximate date of splitting into member languages, assuming that language follow etnicity. The model is capable of reproducing the archaeological dates available for initial settlement during the paleolithic period and the archaeological dates for the neolithic transition in Europe, Middle East, India, Indochina and Far East simultaneously within approximately +/-20%. The calculations supports the existence of Nostratic, Austric and Dene-Sino-Caucasian, and the date of initial settlement of Eurasia and the spread of different types of agriculture economies provide important clues to the dating of the splitting of language families. The calculations suggest that it is not probable that the forst humans arrived in America earlier than 25,000 years ago. The integrated interpretation of the modeling study that the origin of language is significantly earlier than 100,000 years ago, in Africa, and that language transfer and diversification has been driven by ecological factors.