OP obliterated
>There have been numerous attempts to find relatives of Proto-Indo-European, not the least of which is the Indo-Uralic Hypothesis. According to this hypothesis, Proto-Indo-European and Proto-Uralic are alleged to descend from a common ancestor. However, attempts to prove this hypothesis have run into numerous difficulties. One difficulty concerns the inability to reconstruct the ancestral morphological system in detail, and another concerns the rather small shared vocabulary. This latter problem is further complicated by the fact that many scholars think in terms of borrowing rather than inheritance. Moreover, the lack of agreement in vocabulary affects the ability to establish viable sound correspondences and rules of combinability.