"Now imagine an angry mob chasing down a thought criminal desperately trying to hide in the woods in order to avoid execution."
This isn't any less frightning, in my opinion.
Nazis had census data on millions of people reaching back decades, to sort trough that data, and search it for "undesirables", they employed computation tech that was cutting edge for its time [0], just like the methods of killing millions of people saw quite some industrialized innovation.
As such it's a rather blatant example for the whole new levels of cruelty technology can enable humans to do.
The progress also didn't just stop there, what the Gestapo and Stasi did, is child's play compared to the amount and details of data that can nowadays be trivially collected on whole population scales [1]
[0] https://en.wikipedia.org/wiki/IBM_and_the_Holocaust
[1] https://opendatacity.github.io/stasi-vs-nsa/english.html
Vast majority of Jews before WW2 lived in small mostly-Jewish towns and villages in eastern Poland and western USSR. It would be inefficient to move them to death camps, also you could steal from them when you murdered them. Win-win.
There was no need for technology, nazis weren't checking the papers or bothering with recording anything. There are thousands of mass graves near formerly-Jewish towns. Non-Jewish population was mostly helping to point the Jews because they were competing for food and resources during harsh occupation conditions, and besides Germans were mass-murdering non-Jews too, just as a lower priority. And if you protested you were Jewish too, right?
According to Timothy Snyder the main difference between countries where high or low percentage of Jews survived nazi occupation wasn't antisemitism but how much pre-war institutions were preserved. In countries where the nazi occupation was negotiated and the rule of law was preserved - it took months to confirm these people were Jews, move them to camps, sort them, etc.
In places like eastern Europe - where Germans just destroyed everything and law was practically non-existant - why would you bother with all of that? It was basically 4 years of the Purge. 1/6th of the population disappeared in Poland between 1939 and 1945. Jews were about 10% of pre-war population.
The involvement of IBM was shameful, but it wasn't necessary. The only technology nazis needed was firearms. And they could probably do it with knives and sticks if they really wanted - like in Rwanda. Or like in USSR or Communist China for that matter.
Most of what you said is true, except for this part. Nazis did make actual recordings(as in - videos) of exterminations conducted in eastern Poland, especially in the area that is now Ukraine, conducted both by themselves as well as the local population(threatened with death otherwise of course), all to show back in Third Reich as proof fo barbarism in the countries they were conquering. I really recommend reading Stanislaw Lem's biography on that topic, since he lived in pre and in-war Lwów.
>>The involvement of IBM was shameful, but it wasn't necessary.
I mean, that's a bit of a weird argument to make. Yes, places like Auschwitz could have exterminated as many people as they did even without IBM's help, but the whole point is that Nazis liked efficiency and the tech allowed them to keep track of what they were doing(in the concentration camps, like you said outside of them Nazis didn't bother to track much of anything)
The Nazis did census data to sort out all kinds of undesirables, one of the more infamous examples being the Pink List; Since the German Kaiserreich police made lists of homosexuals and those suspected of being homosexuals.
These lists made it trough the Weimarer Republic, and once the Nazis took over the Gestapo already had most of their work done for them, because these pink lists were only one of many lists Germans liked to keep about the population.
It's one of the reasons why Germany to this day tries to be somewhat careful about large collections of personal data because after the Nazis, there then was the GDR with the Stasi, who once again took it to a whole new level.
These are relevant and well known historical examples for data collections being abused, making the Nazis out as mere "Dudes with guns" is vastly underplaying the levels of sophistication and effort that were put into "sorting trough people" on population size scales.
In that context, whatever point you are trying to make about numbers of victims in territories is kinda besides the point.
The point being that even in occupied Poland everybody had to register for the census, Polish people that were found without their registration form were shot on the spot.
In addition to that the Nazis also got Polish population data from the Deutscher Volksverband in Poland.
And it wasn't just Poland where that happened, it happened in pretty much every territory occupied by the Nazis because that's what the Gestapo was created for.
https://books.google.co.uk/books?id=ICISEAAAQBAJ&pg=PT298&lp...
If a G7 state were to change in that way again, they would almost certainly achieve their eradication goals
Because it reduces the costs of doing it.
Technology also allows for more leverage. Hitler need an entire modern nation state with millions of people, semi-autonomous robots may give this power to a group of thousands.
To control them you need one- or even none.
You could program a ethereum smart-contract virus, which hires people to scam money, produce slaughterbots, ship them to a city and strategically hit the soft underbelly aka airports, roads and railways and communication.
If you stack the attack into waves and have the slaughterbot parcels piled into flats by gig workers, you can have a ideology free terror attack that kills millions.
Such ATTAC-CELLs without members, are part of my games lore.
Here is a picture of a standardized factory, made from standardized components, making "slaughterbots" made from standardized components.
https://springrts.com/phpbb/download/file.php?mode=view&id=1...
https://springrts.com/phpbb/download/file.php?mode=view&id=1...
PS: The main building block is a sort of hangrenadesized fuel-container, with a fuelcell useable fuel that can be chemically primed to be a explosive. A standardized battery that could be exploded would do too..
My point is, you don't need technology to achieve bad things and it is the wrong thing we are focusing on when trying to prevent these things. Nukes can already annihilate billions yet here we are, not being annihilated by nukes.