I disagree... I think that's exactly the way Darwin meant it to go context wise.
It's hard to argue that anyone who believed in evolution back then wouldn't believe that... or at least not do so and be intellectually honest with themselves.
Regardless... I think your overlooking one problem that makes what seems logical, illogical.
Even if things worked exactly as is postulated and changes happen.
Now you've got a more developed africa, gone mostly of dictators and flourishing.
Full of people who remember that we did nothing while they're mothers, brothers, fathers, sisters and children died.
They pull out of it to become rivals who hate us... conflict will ensue and the cycle will start over.
More unification is needed not less. We may need new methods of helping... but it's not logical to just leave them hanging.
