premise: Essentially , he proposes that the parent of all Indo-European languages was itself born in central Anatolia , whence it spread eastward , westward , and northward , being modified by the influences of the languages with which it came into contact , till it ultimately emerged in its recognizable , modern manifestations which we categorize into Germanic , Hellenic , Italic , Indo-Iranian , Anatolian , Armenian , Celtic , Tocharian , Albanian , and BaltoSlavic and true is true and true is true and true is true and true is true and true is true .
hypothesis: Indo-European languages were n't influenced by any other language , they were self-sufficient .