>>. Opinions don’t require proof, truth claims do.<<
And the arbitrator of a “truth” vs. “opinion” claim is exactly whom?
And, I note your truth claim of “Opinions don’t require proof, truth claims do” is unsubstantiated and thus requires an “opinion” signpost.
The bottom line: You can’t win this one (I M H O). Every opinion is an opinion, whether it be declarative or sidled-up-to.
If a statement such as “Mrs. Palin is unelectable” requires me to signpost it as an opinion, I have a solution (see tag). Of course, to meet the ill-defined requirement of “opinion vs. truth claim” everyone else will need to apply the same solution.
Sadly, we will lose some very clever taglines, but forensics is a harsh mistress.
If Sarah Palin wins the primary, will you support her candidacy?