Oh, and your point about assertions being true, false, or unknownable is well-taken; but then use the word, “assertion” instead of “opinion.” An opinion, by nature, is unable to be proven.
I’m not sure what you mean by this. I meant that what you were calling a fact, was really merely an assertion. An assertion can be a fact, if it is established, but the assertion you made is not established, as I think I demonstrated.