Open Syllable once again. Endogenous or Exogenous?

Caldarelli discusses why Mario Enrietti's theory of an exogenous, namely Romance origin of the Slavic open syllable structure (OSS) should be rejected. He suggests that neither general principles nor empirical evidence help to support the Romance-Slavic hypothesis as an explanation of the origin and development of the OSS. There is no doubt that interferences between Slavic-speaking and Romance-speaking peoples existed, but there is no clear evidence to support the idea that Romance languages exerted a strong or long-lasting influence on the formation of Slavic languages. As things stand at the moment, OSS was a fairly long-lasting feature in Slavic and that it underwent various historical changes.