 The key proposition in Wiik's hypothesis is the phonetically-derived idea that the Finnic-Ugric and Basque populations who adopted the fashionable Indo-European language replaced their own new language but used pronunciations in a way familiar to their birth language, which all gave rise to the new language.In essence, Wiik suggests that Germanic, Slavic, Baltic, Celtic and Iberian did not emerge from Indo-Europeans themselves but from the Finnic-Ugric and Proto-Basque populations.That would make the Germanic, Slavic, Baltic, Celtic and Iberian populations genetically as descendants not of Indo-European but of Finnic-Ugric and Proto-Basque respectively, a claim not fully supported by any genetic evidence.