 He does not consider subsequent modifications (for instance, the so-called wave model, in German "Wellentheorie"), that could correct and refine the first hypotheses.Such refining, it has to be said, is progressively approaching to the area where Indoeuropean should have been created (today's Anatolia) in the Mesopotamic area.Moreover, Semerano's assertions, according to which the existence of Indoeuropean would be implausible, has no evidence in archaeological finds which confirm the theory.