Aryan assimilation theory
One of the major matters discussed among various authors in context of the Indo-Aryan invasion/immigration theory is about the supposed non-Indo-European terms found in the Vedic literature. For instance, noted Indologists and Indo-Europeanists like Michael Witzel (2003), Alexander Lubotsky (2001), JP Mallory and DQ Adams (2006) etc have highlighted certain words which they suggest to be derived from the unattested language of the bronze age Bactria-Margiana archaeological complex or the Oxus civilization of Central Asia, which they deem as non-Indo-European, since the cognates of these words are not encountered in other Indo-European branches (in some cases, noted only in neighboring Tocharian branch). These words include names of Vedic sages like Atharvan, Kaśyapa etc. They suggest the proto-Indo-Iranians of the steppes borrowed these names from the Oxus civilization after they took over the native culture before they moved into India and Iran. It is important to note that these name...