[anon44]

But some races were likely separated for longer than that, so these mutations are likely uneven across populations. Very disturbing if true.

[gingabriska]

Or they seperated after having this mutation since we've no evidence that any specific ethic group (I assume you used race for this?) has inability of learning a recursive language.

[Hasknewbie]

I had the same question while reading TFA. The Khoisan ethnic group split from the main population an estimated 150k years ago, and although their clicking language is peculiar I don't think they have any issue with recursive grammar.