This is not a very good argument.
What is the role of 'forensics' in terms of proving a charge in a criminal case ? But before we answer that question, it begs the question of what is 'forensics' in the first place.
Forensic science - Wikipedia, the free encyclopedia
The 'case' here could mean anything under discussion, be it how water evaporated or how a theft was committed or how a politician made X Y Z decisions. In other words, if the investigation was done properly in terms of adhering to unbiased investigative techniques, forensic evidences should, and usually would, sway an audience towards one theory seeking to explain an event, whether that event is scientific or criminal or even just what to buy for someone's birthday party. Forensic evidences are about creating an overwhelming argument, not about establishing claims.
You have a claim. Now convince me why I should believe you. Do you have evidences, logical and physical, of your claim ? Show them to me. A 'logical evidence' is not a true piece of evidence but usually is accepted as such. It means that under logical deductive reasoning, certain events or behaviors must have taken place. I stabbed you then I ran from the scene. That is a piece of 'logical evidence'. A sane person would not be standing there waiting for the police to arrive, although that has happened in the past. If I embezzled from you, I would not keep the money locally but in an offshore account in a country that have strict privacy laws, although we do have stupid embezzlers who did stupid things like kept their money in domestic banks, hence, available for investigation and seizure by the police.
When I was shopping for my house, my realtor showed me three pieces of forensic evidences:
- Current home prices.
- Houses sold.
- Building permits issued.
Current home prices are coincidental indicators.
Houses sold are lagging indicators.
Building permits issued are leading indicators.
All combined they form an argument as to why I should buy a house here but not there. If there is a rise in building permits and that is accompanied by increasing prices as accompanied by historical prices from the houses sold statistics, that supports the argument that I should buy here instead of there.
IBM and the Holocaust: The Strategic Alliance Between Nazi Germany and America's Most Powerful Corporation-Expanded Edition: Edwin Black: 9780914153276: Amazon.com: Books
The IBM Hollerith machine is one piece of forensic evidences that point towards the claim of how the Nazis kept tracks of the Jews. Not how many Jews actually killed by gas chambers, bullets, starvation, or whatever else methods. How many Jews died by X Y Z methods is a different claim and would warrant different pieces of forensic evidences. The IBM Hollerith tabulation method is physical forensic evidence of
HOW the Nazis kept tracks of the Jews, which supports the logical forensic argument (evidence) of
WHY the Nazis needed to keep tracks of the Jews, which leads to the claim of
WHAT the Nazis wanted to do with the Jews.
So even if we have no forensic evidences of the gas chambers themselves, other forensic evidences, physical and logical, are sufficient to plant doubts in the audience's minds as to your claim that no Jews died in the Nazis' plan to exterminate the Jews. There are so many of them that they overwhelms any counter claim and flawed arguments like yours when you (mis)used Raul Hilberg.