You're basically just dancing around words to say that evolution isn't a fact, from what I can tell.
Facts are facts, one fact does not become "more factual," rather it becomes "more supported" with data, analysis, etc.
To say that evolution isn't a fact because it isn't as demonstrable as germ theory is like saying germ theory isn't as factual as the laws of physics because the laws of physics are easier to demonstrate.
There are stacks and stacks and stacks of data, experimentation, etc that completely validate and further fortify the theory of evolution to where it is a fact.
Facts are facts. And the truth of that statement is independent of whether we know them to be true or not. But science is about establishing them as true. And it's not about falsification. It's about affirmatively demonstrating propositions. There are standards for doing that and the burden of proof is substantial.
I have never said anything about proving the overall theory of evolution to be false or about it not being a fact. I said it is not established as fact at the highest level of certainty.
Here is another example:
A physicist can say that a given volume of water in a given configuration will assume solid form given exposure to a given temperature and pressure for a given time. Then the physicist can set up an experiment to expose water to the described conditions. And what he predicted will come to pass. The proposition is supported at the highest level of certainty.
On the other hand, a biologist may say that a population of single celled organisms can give rise to a population of multicellular organisms. But can the biologist set up an experiment to demonstrate that? Maybe. But it hasn't been done yet. The proposition just isn't characterized by as great a level of certainty as the experiment involving water assuming solid form does.
And the proposition that single celled organisms can give rise to multicellular organisms IS very important to the overall body of evolutionary theory. It is a critical, foundational step in the theorized cause and effect process. The fact that you either can't or won't see that doesn't change things.
BTW, I'd say that the germ theory of disease is at least as well supported in terms of certainty level as anything in physics is. Disease may not be as predictable as certain phenomena in the world of physics are. But the basic proposition that microorganisms can cause disease is very well supported by experimental evidence. See
http://www.google.com/url?sa=t&rct=j&q= ... b2QHNBv6NQ" onclick="window.open(this.href);return false; .
I think your statement about " stacks and stacks and stacks of data, experimentation, etc that completely validate and further fortify the theory of evolution to where it is a fact" reflects a lack of understanding of the scientific method as well as the concept of validation.