I agree with you about the definition of "proof" in the legal sense. I also agree with you that there is a huge amount of evidence "proving" (in the legal sense) that the holocaust happened. I also agree that anyone that denies the existence of the holocaust is looking at the evidence with complete bias. There is so much evidence that the holocaust happened, this is not what I'm discussing. There is easily enough evidence, pictures, videos, primary sources, and historical documents that puts into the category of true or "proven" even to the point of an almost infallible conclusion, way past the point of reasonable doubt. All I am saying is that, just like any other fact out there, one piece of concrete, solid, true evidence found can invalidate this claim, just like any other claim. There is no evidence of this now and probably never will be but there still is a possibility.
Just take it to heart that I am not trying to apply this to the Holocaust, this idea just came up in the topic of the Holocaust and it could be applied to pretty much any other aspect of life. Nothing is always true, always definite, always right. There is always the possibility that some where, on our planet, on another planet, anywhere that could change even the most accepted laws and facts, such as gravity, newton's laws, or anything for that matter
Finally, thank you for having an intellectual conversation with me and not resulting to an argument. I understand where you are coming from and I hope you can see my side of it too.