The languages of Northern Eurasia: Inference to the best explanation

This paper discusses the development of hypotheses of classification of the languages of northern Eurasia, from the early “Scythian” hypothesis to the later Nostratic, Eurasiatic, Sino-Caucasian, and Dene-Caucasian proposals. The concept of scientific “proof ” is discussed and contrasted with an alternative concept of “best explanation.” Eurasiatic and Dene-Caucasian can then be viewed as testable and fruitful hypotheses that, so far, provide the best explanations for language diversification in northern Eurasia.