Logic and philology: incommensurability of descriptions of one-vowel systems

Abstract

Our purpose is simple: to apply a rudimentary kind of logical analysis to the problem, which sometimes arises in linguistic typology and in comparative linguistics, of whether there are any languages with fewer than two vowels. The principal reason why this question has occupied the attention of linguists is probably the fact that Proto-Indo-European is sometimes said to have had only one vowel phoneme (see especially Hjelmslev (1936–7), Borgstrøm (1949, 1954) and Lehmann (1952), following Saussure (1879). Yet this was precisely one of the features of PIE reconstruction that Jakobson selected for attack on typological grounds, reasoning that ‘a conflict between the reconstructed state of a language and the general laws which typology discovers makes the reconstruction questionable’ (1958: 23).