Phil, this isn’t a semantic matter! It is a complete paradigm shift!
Yes, it is a bit more than semantics, for I find the term "healthy" more understandable than "clean," which I've seen interpreted many different ways (most commonly to mean vegan or raw vegan as assumed to be optimally healthy diets). Clean is such a vague and differently-used term that I don't know what paradigm you are trying to communicate with it.
I finally found the post of Bruno Comby about his experiment trying to get the milk from the breast of a freshly killed lactating mammal.
My point was that I was discussing wild predators like lions, hyenas, jackals and feral hogs, consuming whole carcasses of small animals, including the milk. Bruno Comby is not a wild predator, he is a domesticated human. He is also a single individual. His failure is not proof. A single counter-example would disprove his claim. I've seen a couple such reports myself. I'll try to find one of them. Of course, we're not talking huge amounts of milk here, but that doesn't mean that milk was never consumed during the Paleolithic.
What kinds of cheese do you think were available in Paleolithic times?
I was hoping to avoid getting into a debate over what "Paleo" means. Suffice it to say for now that "foods that were available in Paleolithic times" is not my definition of Paleo. Is that really your definition?
What is such an experiment meant to prove?
It wasn't meant to "prove" anything. It was in response to a question about raw vs. cooked eggs. If you have a better suggestion, feel free to make it.
small wounds got often infected and himself even had (twice, if I remember correctly) spontaneous infections
I've never experienced this, not even in the days I was consuming pasteurized skim milk, the worst of the worst. In fact, I've never had an infected wound in my life, despite getting wounds. I eventually even stopped bothering to dig out deep splinters, as I noticed that they came out on their own eventually and I never got an infection. Did GCB have an immune system issue?