
 Survival Bottlenecks and Ockham's Razor Sam Aurelius Milam III
I've seen several documentaries that report various theories about our ancestors. One program reported that, 140,000 years ago, there was a survival bottleneck that was caused by environmental changes in what we now call Africa. Reportedly, at that time the entire human population of the world dropped to 600 breeding pairs of people. Scientists claim that they were all
in Africa. Another program reported that, about 70,000 years ago, after
the Toba eruption near what we now call Sumatra, there was another survival
bottleneck for humans. Reportedly, the entire human population of the
world at that time included no more than 5,000 breeding-aged women. Again, scientists claim that the survivors were in Africa.
Such claims of survival bottlenecks among our ancestors are based on studies of human DNA. Such survival bottlenecks have reportedly caused humans to have a very small amount of genetic diversity, as compared to other species.
The scientists claim that we're all 99.9% genetically identical. By
contrast, they claim that other primates have as much as ten times more genetic
diversity than we do. That's very peculiar. I'm not aware of
any explanation by the scientists of why environmental changes that reportedly
threatened our ancestors with extinction, at least twice, weren't a problem
for other primates that were living in the same geographical regions.
So, every 70,000 years or so, humans reportedly go through a survival bottleneck. Why are there survivors only in Africa? If the bottlenecks are caused by environmental conditions in that part of the world then, after all of the
many human migrations out of Africa, why don't humans survive elsewhere? Why aren't other African primate species similarly affected? Scientists appear to have accepted without question that ancient Africa was the cradle of human survival. There's a big world outside of Africa. People ought to have survived elsewhere besides Africa.
Maybe there weren't any bottlenecks at all. Near extinction of humans
isn't the only possible explanation for the small number of our ancestors. In fact, the balance of the human population at the time need not have died
at all. Maybe 140,000 years ago, 600 pairs of people were selected from
the human population and subjected to genetic modifications. Maybe
their descendants were incapable of interbreeding with people in the main
population. Maybe 70,000 years later, something similar happened to
5,000 women who were selected from the descendants of the first group.
Maybe those people are our ancestors and their descendants, being unable
to successfully breed with the main population, gradually replaced it.
The genetic result would be the same as if a bottleneck had occurred and
everybody else had died. Here's another consideration. The recurring
origination of other human species or subspecies only in the region that
we now call Africa suggests that other groups besides our ancestors, only
in that region, might also have been modified but that those other modified
groups didn't persist. Only ours did.
What could cause such genetic changes and cause them only in Africa?
Maybe the aliens have a facility somewhere in Africa, periodically reactivate it, and conduct genetic modifications of humans. It's as good an explanation
of the observed results as climatic changes and volcanic eruptions. That is, in either case we'd have the same number of ancestors at that time,
and they'd all be in Africa. In that regard, I recommend my ninth Ravings
essay, Born to Rave. Here's another important point
to consider. It's happened to our ancestors at least twice, and maybe
more times than that. It seems to happen about every 70,000 years.
It's been about 70,000 years since it most recently happened. There
have been a lot of alien sightings lately. It might be time for it
to happen again. As December 21, 2012 approaches, watch Africa to see
if we're scheduled for replacement. 
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