> How does a proficient reader separate facts from opinions if good writing doesn't disambiguate facts and opinions? Do they just assume? Facts and opinions ar

> How does a proficient reader separate facts from opinions if good writing doesn't disambiguate facts and opinions? Do they just assume? Facts and opinions are not different qualities of the same claim, but different claims to begin with. “Butter is about 18% water, by weight” is a factual claim and “butter is about as healthy as vegetable oil” is probably opinion because the word “healthy” is, well, often vague and not something people agree on, at least in this context. > Side note: I went through the original blog post again, and there are lots of examples of Dan Luu doing exactly what I'm writing about, to the point where I'm confused why the original commenter thinks he's not using a different tone based on uncertainty. Yes, I get a sense that there may be some more cogent complaint that the original commenter has, a complaint which provoked the comment, but I can’t figure out what that complaint is from the comment. Just that people who complain about tone often have something else to complain about, but tone is more obvious.