Radiocarbon dating is wrong
The Aryan invasion theory was not based on true archaeological, linguistic and ethnological evidence.Later research has either discredited this theory by providing new evidences that combined with the earlier evidence makes other explanations more likely.Granting that the Sutra literature may have existed in the sixth‑fifth centuries BC, he assigned a duration of two hundred years to each of the preceding literary periods, namely those of the Aranyakas, Brahmanas and Vedas and thus arrived at the figure of 1200 BC for the last‑named texts.However, when his own colleagues, like Goldstucker, Whitney and Wilson, challenged him, he stated that his dating was ‘merely hypothetical’ and confessed: ‘Whether the Vedic hymns were composed in 1000 or 1500 or 2000 or 3000 BC, no power on earth will ever determine.’ However, the saddest part of the story is that his blind followers, both in India and abroad, even today swear by 1200 BC and do not dare cross this Laksmana rekha. The first quarter of the twentieth century witnessed the discovery of an altogether unknown civilization on the Indian subcontinent, datable to the third millennium BC.Tamil Nadu, Andhra Pradesh, Karnataka and Kerala do we have even a single site of the Harappan Culture !!On the other hand, what we do have in South India about that time is a neolithic culture.Thus, for example, even after the Europeans overran North America and gave their own names to the towns, such as New York, New Jersey, etc., many of the names of the towns and rivers given by the earlier inhabitants, viz.
But the hard fact is that these came from various levels, some from the middle and some from the late, and some were found in deposits which accumulated after the site had been abandoned.The theory was not just wrong, it included unacceptably racist ideas: In the nineteenth century a German scholar, F.Max Muller, dated the Vedas, on a very ad hoc basis, to 1200 BC.Do then the proponents of the ‘Harappan = Dravidian’ equation expect us to believe that the urban Harappans, on being sent away to South India, shed away overnight their urban characteristics and took to a Stone Age way of living?
Again, it has been observed all over the world that even if the original inhabitants are pushed out of an area, some of the rivers, mountains and towns in that area continue to bear the original names.
Since the Rigveda refers to Indra as puramdara (destroyer of forts), he jumped at the idea that there was an ‘Aryan invasion’ which destroyed the Harappan Civilization, and the latter became ‘extinct’.