Even the maximalist (and implausible in light of other data) Rushton-Lynn hypothesis

I've been looking for about a decade now, but have not encountered evidence that would discredit Lynn. I have however seen a lot of evidence which corroborates his findings.

If you have evidence that discredits his work, I would appreciate it.

is perfectly consistent with aid (external provision of disease treatment, etc) having massive benefits in reducing disease and increasing wellbeing until biotech or more radical things can bypass any genetic disadvantage.

Why stop at Africa then? Shouldn't we invest billions in animal shelters, so that dogs and cats can live long lives until we find a way to bypass their genetic disadvantage? Wouldn't those be just as "massive benefits"?

And there's no need to be smug.

Perhaps it came across as smugness, but I do find that every piece of news I see, either from South Africa, or from Haiti, or from Nigeria, or from Zimbabwe, or from Turks and Caicos, just adds to the pile of evidence.

Also, I myself live in a place like that. Which is why I suggest (in all seriousness!) that people should consider visiting a country like South Africa for a while.

There's no better cure for academic distance than direct contact with the hard facts on the ground.