When Is A "Conquest" Not A Conquest?

When Is A Conquest Not A Conquest?

You are a scientist living in the year 4017, specializing in the ancient civilizations that existed between 1492 and 2200 A.D.  Various cultures came and went, but alas, most written records were lost in the intervening centuries.  So you study DNA.

Your fellow scientists know that in many different regions, the DNA record shows profound change over time, both in autosomal percentages and uniparental markers (Y-Chromosome, mtDNA).

Unfortunately, arrogant bloggers still exist in 4017, and three of them, one called Davidski Futurski (who blogs at Eurogenes-ski), a fellow named Maciamo-Futuriamo, and another named Rocca Futura, are examples of "a little knowledge can be dangerous."  

They blindly state that all changes in DNA indicate evidence of conquest by some superior culture of badass men.  (Nevermind that they all believe they descend from the people they assert to be superior; that's irrelevant, we're sure).

Your boss at the university, someone who sees nuance better than the bloggers, asks you to model the record and various types of human interactions, and answer the question:

"When Might A 'Conquest' Not Really Be A Conquest?"  

So you come up with the following four models, and re-create as best as you can some historical examples for the clueless:

1.  Refugees from a war-torn area flood into a nearby land (and even some faraway lands), overwhelming the demographics.  The bloggers post that a people called the Syrians conquered the Lebanese, starting in 2011, but you're not so sure.  Your research finds the opposite: that there was a horrendous war in Syria, causing 11 million people to lose all their belongings and flee.  Therefore, you don't think these people were conquerors, but refugees.  Nevertheless, the stubborn bloggers point out how the record shows a massive DNA shift in Lebanon, where the Syrian markers went from 5% to 25% of the population in just three years.  

"It had to be conquest" they write, of powerful, rich, sophisticated men conquering the weak Lebanese.  

Alas, you tell them: it was the opposite: a beaten-down people streaming into a nearby land (and also places like Sweden), altering the gene pool.  In fact, Lebanon started with 5 million people, and absorbed an influx of 2.5 million refugees.  Thus, the autosomal genetics and uniparental frequencies were both significantly changed.  It's really as simple as that.

2. Disease.  In 1598, slaves from Africa were brought to a place called Puerto Rico.  They brought with them Yellow Fever, something the native American inhabitants did not have exposure or antibodies to.  

Although the natives were, under the caste system at the time, a couple of rungs higher than the African slaves, and although the natives had better sources of food and systems for dealing with the native landscape, they were killed off in the thousands simply because they didn't have antibodies to the new disease.  

But all the bloggers see is that Puerto Rico went from showing Native American DNA patterns to showing African (and European) DNA patterns.  And they cry, their must have been a conquest, led by the African newcomers!  You LOL, pointing out that these newcomers were slaves and vectors.

3.  Economic Opportunity.  The bloggers now discuss Los Angeles.  They point out that the DNA record shows that in the 1950s, Los Angeles was 80% inhabited by an ancient culture called, "whites."  By 2020, it was 60% Hispanic.  The record thus showed profound shifts in autosomal frequencies and Y-chromosome patterns.  

"There must have been a conquest!" the bloggers shout from the rooftops!  War!  Destruction!  A supreme powerful tribe of men, with better tools!  

No, you quietly assert.  Your research shows that poor Hispanic immigrants simply migrated to Los Angeles, looking for better economic opportunities than what existed back home.  Alas, the bloggers still don't grasp this example either.

4.  Simple Cultural Differences in Birthrates.  Palestinian women have vastly greater birthrates than their neighbors.  In the 1960s, it was 8 children per every female.  Even now, it's above 4.0 children for every woman.  The Israeli birthrate, while still relatively high at 3.0, is not as high.  By 2045, Palestinians may outnumber Israelis.  

Our future bloggers, looking at this from the perspective of the year 4017, may try to argue that there was a conquest by the Palestinians.  They must have had superior technology, they claim!  Better weapons!  

But again, your research (and history) shows this NOT to be the case.


Taking these four examples, you explain to the bloggers that many changes in DNA frequency, cannot be explained as "conquest" even though it's tempting for the simple-minded to do so.  

There are even examples of multiple of the above factors explaining demographic shifts.  For example, the Catholic Irish replacement of Anglo Saxons in many East Coast cities in the 1800s.  That was due to the Irish being refugees, seeking greater economic opportunity en masse, and having higher birthrates.  

Somewhere in the future, the intellectual heirs of Maciamo, Davidski, and many on Anthrogenica, are arguing that the Irish immigrants of the 1800s were in fact a technologically and militarily superior, overwhelming force of wealthy males who clearly conquered the British Americans of the time.

And you, and anyone with any degree of a nuances understanding of history, is still LOL'ing.  

How Little We Know About Ancient DNA - Part II

Earlier this year, I posted a series of maps graphically depicting the (at that time) exhaustive list of Ancient DNA finds, mapped out for both time and space.

The post, while now a bit dated due to additional finds, is still worth examining.  When reading it, it should becomes very apparent to you, the concept in the title of this post: How Little We Know About Ancient DNA.

As you can see from the maps, it appears that people bearing certain Y Chromosome haplogroups "flew" across time and space.  And that certain parts of Europe had nobody in them until someone flew across the distances.  

Of course, this is impossible.  It simply reflects the fact that we continue to have immense gaps in skeletal finds and in our knowledge.

Most importantly, it shows that today's conventional wisdom, popular at echo chambers like the Anthrogenica boards, will certainly change tomorrow -- revealing the adherents to such theories to be akin to arrogant fraudsters, peddling certainty where none is scientifically warranted.

Recently, a poster at Anthrogenica, with the handle Tomenable, posted an excellent visualization of the same gaps in knowledge that I referenced.

You can view a list of aDNA finds here, in chart form, courtesy of Tomenable.

And even better, here is a chart, in chronological order, showing the same.

What does the chart show?   By applying *scientific* methods of taking things to their logical conclusions, and reducing our knowledge to a set of provable statements, you can easily see how little we know.

For starters, based on these chrono maps, it looks like Haplogroup C1 made it to Europe after I2.  Yet almost everyone, from the scientific community to the "citizen" scientists (their term) on Anthrogenica, agree that C1 is a rare, likely "Cro-Magnon" marker, that represents the very first humans out of Africa and into Europe.  On the other hand, it has been accepted for over a decade that Haplogroup I, notably I2, represents the second (or third) wave of the population of Europe, associated with the Gravettian dispersions.  

But again, this is *not* "what the aDNA shows."

Ask the wiseguys on Anthrogenica, or search their posts.  They express with certainty that C1 came first, followed by I2.  And it probably is true.  But it is NOT born out by the aDNA evidence.  (Yet).

However, the same group of people turn to the aDNA evidence (blindly) to express 100% confidence in other theories, for example, everything from the notion that R1b xV88 couldn't be found west of modern Poland until the Indo-European expansions.  (I find this notion laughable.)  

They also rely on the aDNA evidence to express 100% confidence in wild notions of sex selection that have more in common with dimestore novels than anything scientific.  The proponents of said theories also happen to be mostly males bearing R1b.  Yes folks, in a world where racial identity is taboo, any sense of ingroup-outgroup dynamics for Western Europeans has simply been transferred to tiny markers on one chromosome.

In other words, many of these folks blindly turn to our meager aDNA evidence to justify their pet theory du jour, but choose to ignore what the aDNA evidence shows, when convenient.  

They cite gaps in data (i.e., a lack of samples) as evidence for proving a negative, as if that was possible -- when they want to.

But they ignore the lack of samples when convenient, if it doesn't fit in their narrative for that time or place.  

Doubt them, they revert to the argument "well, the aDNA shows..." but they are more than willing to fill in gaps in aDNA when convenient.

It's already been a rough year for the arrogantly certain in Ancient DNA.  Notably, past theories on the dispersion of Haplogroup J2 have fallen by the wayside.  Theories posted on Anthrogenica just a couple months ago, and accepted by the echo chamber as gospel fact, have been called into serious doubt by recent academic papers.  

I've also posted repeatedly on how difference in culture and hyperlocal topography can affect what aDNA survives into modern times.  The easiest example is one tribe burying their dead, while another tribe cremates it.  Anyone who knows anything about written history understands that the reason why we don't have m(any) ethnic Roman skeletons is because they cremated their dead.  To those who don't grasp this concept, it would be as if the Romans, a powerful, numerous, colonizing, widespread, important society -- didn't exist.  

I can just see Anthrogenica in the year 2515: "but there are no Roman samples in aDNA," they would maintain adamantly.  Yes, you would reply.  But the Romans existed.

The point is simple: approach any theories explaining what happened before written history with caution.  There are major gaps in the record, and it is far, far too early to approach things with the smug certainty one sees on these boards.  

Look at the samples across time and space (geography).  Don't hide behind relative, subjective terms like "Mesolithic" and "Neolithic."  Instead, look at how Europe was populated, the way it was populated --- in gradations, over (real) time.  You, too, will notice "How Little We Know (Still) About aDNA."