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Comment by pluma | Hacker News Reader

That headline in itself is such a non-story. What did you think why the language most European languages evolved from is called Proto-Indo-European? Language maps for Europe have been showing a historic East-West migration for ages.

The actual news story seems to be that we've finally found DNA evidence that backs up the archaeological and linguistic indicators we've already had. The rest is just providing context while somehow managing to present the concept itself as novel (which it isn't).

This is akin to starting a story about cosmic background radiation being discovered with the headline "Origins of the universe linked to rapid initial expansion". Yes, the discovery itself is newsworthy, but the headline would lead you to believe that the theory itself is somehow novel or unexpected.

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The DNA analysis not only backs up the evidence, but it's is a different kind of evidence. Language or pottery styles could theoretically be transmitted without there being a trace in people's genomes. Memes vs genes if you will.

However, in practice, especially in old ages, language and culture relates quite closely to peoples. Inventions that make life easier, are the kind of things that spread relatively fast between civilizations.

Except memes travel more or less instantaneously now, whereas back then, the only way culture and civilization elements traveled was along with people.

But a wave can get transmitted without any 'particle' moving any significant distance.

With people walking a few hours between villages, ideas could theoretically spread at >10 kilometers a day. At 100 walking days a year, that's Rome to Paris in a year, easily. In practice, transmission speed would be way lower, but given a few millennia, a lot is possible.

And, by the way, that applies to genes, too. There is no need for statistical east-west drift of humans for genes to spread from Asia to Europe. All you need is (way) more people in Asia than in Europe, and people moving a few km in random directions between birth and adulthood (oceans limiting such movements would help, too, but aren't even necessary)

> With people walking a few hours between villages, ideas could theoretically spread at >10 kilometers a day.

You needed a lot more than a few hours to walk between the villages in the Eurasian steppes, mostly because there were no villages there.

Population density back then wasn't what it is now.

That's true, but how do you distinguish between migratory people, conquering people, and cultural diffusion?

This is a fascinating question and (last time I kept abreast of the literature, admittedly about 8 or 9 years ago now) seemed to be an open one. DNA evidence can only tell so much because it only hints at the spread of technologies, languages, or the "Neolithic Package" of domestication practices and tools that revolutionized European prehistory. This article seems to have a more up to date view than the work I was familiar with (Cavalli-Sforza's):

http://arheologija.ff.uni-lj.si/documenta/pdf30/30richards.p...

Certainly. I wasn't saying the actual news isn't newsworthy, but the article puts the emphasis in the wrong place.

We updated the title from "European languages linked to migration from the east" to the subtitle of the article, which references the DNA evidence.

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