Nobody can prove the holocaust didn't happen. You can't prove a negative. But if you could, and a stupid docent at a museum spouting out rubbish is all the evidence it takes to prove that a historical event didn't happen, there is no history.
If you seriously believed that nobody can prove a negative, then all your efforts here are entirely futile and pointless. OK, we knew that already, but as a matter of philosophical principle, your claim that 'nobody can prove the holocaust didn't happen' means that negationism is utterly impossible.
In practice and in reality, you
don't operate on that basis, because you seem to think you
can negate historical events by raising the standard of proof and standards of evidence for the Holocaust (and the Holocaust alone), as if historical events magically disappear into a puff of smoke because there is supposedly 'not enough' evidence to satisfy the unreasoning and unreasonable demands of an anonymous internet troll.
It's been said often enough, but if we applied your apparent standards of proof and evidence to other historical events, then most of human history would become unknowable. So for that reason alone, your strategy of insisting that standard x must pertain otherwise an event didn't happen, is fallacious, and will always be fallacious.
I'm addressing what is evidently your core argument since you've repeated variations on this theme often enough. Quite simply, your core argument is wrong, and is not accepted by any relevant discipline or method of investigation. It's also not accepted in any study of epistemology that I have read.
History can't, as a rule, be negated. It can however be revised. Your mistake is to say on the one hand 'nobody can prove a negative' and then on the other impose arbitrary standards of evidence as if this would negate the events.
What you consistently refuse to do is demonstrate that history must be revised and prove a new historical explanation. That's virtually the only way that history really changes, and it demands that the person making the new claim show through new evidence that x happened instead of y. The only other way is to demonstrate that the evidence on which the previous explanation relied was fabricated.
The latter route is one that many 'revisionists' have tried to take, but since they lack provable expertise with documents and resort to various arguments to incredulity when claiming 'forgery', and provide no evidence of any forgery, they aren't listened to.
There are however more fundamental problems with the forgery gambit, since the evidence for the Holocaust consists of more than the evidence which deniers have hitherto tried to claim was forged. The evidence is superabundant that several million Jews were deported to specific camps and did not emerge out alive to be tracked by other historical sources.
The most reasonable explanation for why they cannot be tracked elsewhere is that they were murdered at the camps, as indicated by a large pile of evidence relating to those camps, of varying kinds.
Simply trying to throw all that evidence in the trash-bin and declare it unworthy, as you do repeatedly, doesn't solve the problem of explaining why there is so much evidence deporting several million Jews precisely to those same camps.
Your response to this has generally been to raise irrelevancies, dissemble and try to change the subject. One of your favourite irrelevancies is to say 'the Jews went where the 4M went when the Auschwitz death toll was reduced to 1M'.
But this still doesn't solve the logical and evidentiary problem, since the 1M figure is based on copious documentation of the deportation of a slightly larger number to Auschwitz, and copious documentation relating to the survival of the discrepancy between the two figures. The 4M figure was an estimate calculated on the basis of projected cremation capacity. Thus your gambit compares apples and oranges.
The other problem, of course, is explaining why the deported Jews would have been treated any differently to the similar number of Jews who died by being shot or in ghettos and labour camps.
Those are the two fundamental problems with revisionism's attempts to deal with the sum total of the evidence for the Holocaust, and they have never, ever been solved by any denier.