[wqaatwt]

> we can conclude, "migration or invasion (...) was a gradual process that wouldn't have been particularly noticeable in any one life time.

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.

[empath75]

I don't think that's different from what I said. Surely there was a lot of migration. I think the evidence is that wasn't a big bang migration, but rather a series of smaller, disconnected migrations.

[wqaatwt]

Well I specifically disagreed with “wouldn't have been particularly noticeable in any one life time”. So it would seem it’s quite different from what you said. If you happen to live in the Pontic Steppe for most of your life yet your e.g. grandchildren are born in Britain that’s quite noticeable.