The Evolution of the Slavic Dual

The dual number in Slavic has always puzzled linguists. While some Slavic languages, such as Slovenian, have three distinct categories of number--singular (1), dual (2), and plural (3 or more) –other Slavic languages, such as Russian, have no dual number. Considering that all Slavic languages have evolved from a common Proto Slavic language, it is puzzling that there is such a difference in the category of number. In The Evolution of the Slavic Dual: A Biolinguistic Perspective, with the aid of