GG&S

Guns, Germs, and Steel ultimately assumes environmental and geography alters everything but the brain, which is absurd.

Moreover, Jared Diamond doesnt even understand New Guineans when it's actually a very diverse island due to divergent evolution thanks to geography

Begone

https://www.unz.com/isteve/more-on-jared-diamonds-guns-germs-and/

http://webcache.googleusercontent.com/search?q=cache:http://www.vdare.com/articles/jared-diamond-the-new-king-of-all-media

ecause he thinks this is merely humans responding to environment rather than environment shaping humans. He argued New Guineans should be mentally quicker than Europeans after all, if Intelligence differences were true. Absurd

Some say he just means New Guineans can survive and environment where the average Westerner would perish. Well, I have no doubt New Guineans are well adapted to their ancestral environment. That is the whole argument even.