"At least one thing is sure: the collapse of both these urban civilizations (i.e., those of the BMAC and the Indus) was not caused by attacks by Andronovan barbarians from the steppes. In fact, it was the result of the slow breakdown of centralized authoritarian power, which did not leave behind a wasteland but rather gave way to more modest, village-type settlements. There are no traces of Andronovan objects south of the BMAC, and the same is true in the Hindu Kush mountain passes that lead to India. As we have seen, there are no traces either in the Indus Valley. But since the current languages spoken in Northern India indeed belong to the Indo-European group, there is only one solution left to save the invasionist model, or at least the concept of an “arrival of the Indo-Iranians”: invisible migrations."