The Rig Veda does provide important evidence of a migration, but not by narrating it. Rather, the vocabulary, grammar, and mythological content are so similar to the Avestan texts that a common linguistic origin seems inescapable. That of course doesn't demonstrate population replacement on its own, but lacking Starlink or even homing pigeons, some kind of migration was clearly involved.
The prevalence of Steppe Ancestry in all modern day Indians should be enough to conclude that some form of migration happened.
All this politically tinged talk about supposed purity of DNA is utter nonsense.
Here’s an article that goes deeper into this:
https://eruditus.substack.com/p/sons-of-the-indus-the-indian...
Recent genetic research points to the complete opposite (at least to some extent). It might have taken just a generation or two for some individuals to get from the steppe to e.g. Britain.
As I understand it, the Bronze-Age Minoan civilization spoke an unrelated language (as evidenced by Linear A) and has a material culture relatively continuous with Neolithic Crete, not imported from the Kurgan culture. They would have been the ones experiencing the steppe-nomad-descendant invasion, the steppe nomad descendants in question being the Mycenaeans around 01450 BCE, who were at that point millennia removed from both the steppes and nomadism but presumably still rode horses at least sometimes.
It wasn't really until the 19th century that it was re-translated and the connection to other indo-european cultures and pantheons was rediscovered.
> It is unclear as to when the Rigveda was first written down. The oldest surviving manuscripts have been discovered in Nepal and date to c. 1040 CE.[3][78] According to Witzel, the Paippalada Samhita tradition points to written manuscripts c. 800–1000 CE.[79] The Upanishads were likely in the written form earlier, about mid-1st millennium CE (Gupta Empire period).[33][80] Attempts to write the Vedas may have been made "towards the end of the 1st millennium BCE". The early attempts may have been unsuccessful given the Smriti rules that forbade the writing down the Vedas, states Witzel.[33] The oral tradition continued as a means of transmission until modern times.[81]
As I understand it, the Tipitaka, Panini, Patanjali, etc., were also first written down around the end of the first millennium BCE or the beginning of the first millennium CE, as writing was adopted relatively late in India.
But actually there are rather solid reasons for believing that the alterations in the Rig Veda over the last 3000 years have been minimal, going far beyond what is commonly described as "pure speculation". Some of them have been described already in this thread, but there is an extensive academic literature on the topic, much of it linked from the Wikipedia article you started reading.
You had several priestly functions, like the Hotar, who recites the invocations of the Veda, and there is also the Brahman. The Brahman checks if everything is done to precision and no mistakes are made. If there are, they need to do corrections.
This is another reason why one can say it has been passed down without much change. There is a critical edition by scholars that reconstructs the changes in meter that might have occurred, but nothing else.
Any recommendations for an overview of the field?
A bit more classical but thorough is a History of India by Herman Kulke and Dietmar Rothermund.
And the best one to go into detail is “The Rigveda : a guide” by Joel P Brereton & Stephanie W Jameson.
Were there such events?
> How much effort do
Not a lot. Since they don’t need to because of writing. As far as we can tell non-literate societies put in massively more effort into preserving oral traditions.
Of course it’s debatable but there is some evidence that oral knowledge can be preserved for thousands of years.
There certainly were; quoting https://en.wikipedia.org/wiki/Richard_I_of_Normandy (28 August 0932 – 20 November 0996):
> Richard either introduced feudalism into Normandy or he greatly expanded it. By the end of his reign, the most important Norman landholders held their lands in feudal tenure.
Normandy, as you may or may not know, is in France.
Then, a century later, his great-grandson, Duke of Normandy, conquered England, subjugating the Britons, Anglo-Saxons, et al., under a French-speaking noble elite. If Jarl Rikard had been cut down by bandits in his youth, or had merely failed to enlist the Norman landholders' swords under his banner (and that of his son, grandson, and great-grandson), the Norman invasion would not have happened. Similarly, if Richard's son Richard had been unable to escape from the court of King Louis IV in 0946, or unable to then win back Normandy from the king by force of arms, his grandson William would have been in no position to conquer—and it is unlikely that the subdivided Duchy would have been able to raise an army to successfully invade England, a feat that has not been repeated in the ensuing 959 years. And so on.
> Of course it’s debatable but there is some evidence that oral knowledge can be preserved for thousands of years.
Yes, your comment was written in reply to a comment naming one of the most surprising examples of such preservation, as a result of non-literate societies, as you said, "put[ting] put in massively more effort into preserving oral traditions". Nevertheless, they seem to preserve massively less historical knowledge despite that effort.
That’s rather indirect. But you do have a point.
However we do know quite a bit about those events? So any English speaker who cares can learn about them.
> How much effort do they typically devote
Well unlike illiterate societies they don’t need to because of books.
> massively less historical knowledge despite that effort.
Well obviously, we can’t really compare them with more literate societies. Then again we’re just very lucky that there was no complete societal collapse in the Greco-Roman world since the 500-600s BC. or so. Some highly literate civilizations like Carthaginians or the Etruscans were effectively entirely erased because nobody bothered to copy their texts).
The problem with oral traditions is that they can preserve knowledge of events that might have happened > 500 years ago (e.g. Homer describes cities, weapons and other aspects of pre Bronze age collapse Mycenaean civilization but it’s all intermixed with contemporary(Greek dark age) stuff and it’s very hard to separate fact from fiction (even ignoring the supernatural bits).
What I was trying to get at is that, by the time the Rig Veda was composed, the diaspora from the steppes was over a thousand years into the past. You wouldn't expect the composers of the Rig Veda to necessarily know anything about it to be able to mention it. Instead, you'd expect them to know even less about the migrations of their nation from the steppes than modern English-speakers know about Jarl Rikard. So the fact that the Rig Veda doesn't mention any long migrations is (almost) no evidence that the migrations didn't happen, nor that they were in any sense gradual. Especially since, unlike Homer, it barely mentions historical events at all—it's almost entirely supernatural bits.
How much do English-speakers today know about the events in early 10th century France that eventually led to English becoming a sort of pidgin French, full of words like "eventually" and "sort" that didn't exist in Beowulf? How much effort do they typically devote to passing on traditions about Æthelwold's challenge to Edward the Elder in Wessex?
And that's after 1100 years of a literate, mostly settled culture with libraries that contain physical books from that time, in a culture that values that kind of factual knowledge of history, rather than more practical sorts of knowledge such as how to properly worship Agni to gain his favor and which plants to poison your arrows with.
Oral tradition can preserve knowledge to an astounding degree. There are songlines, as I understand it, that record the geography of landforms that have been undersea since the Ice Age (https://www.scientificamerican.com/article/ancient-indigenou... roughly the same time as the Proto-Indo-European culture). But it is hardly surprising when it is silent on a topic we wish we knew more about.