It is an opinion, how can that be false?

Hmm, all Jews are evil: just an opinion, right (see: adolf schicklgruber)

How about a benign one: All trees are secret invaders from Tauria#34. Funny, or a symptom?

An opinion which holds a false premise, will be false.

If someones opinion is false, in your opinion, should you hold that it is true?
Just not for you.

But suppose it is an opinion about a minor thing; like art.?
Then why do you have to care what my opinion is? It is, after all, a minor thing to you, right?
When I say an art opinion, i.e., aesthetic stance is wrong or false, it is because it leads downhill, or over the ledge.

Can I be wrong?
Yes. But that also means I can be right. Maybe you can too; if you thought it through.

If any opinion is right, about anything, anytime, then there is nothing left to be said, by anyone, anywhere…