Originally Posted by
Angelus_dead
No: as already explained above, that is not what the word "opinion" means.
An opinion is a belief you can't presently prove. Many people have opinions that are wisely considered and which are likely to turn out true, but some people hold beliefs that fly against clear evidence and global concensus. But it's still an opinion, because it is a belief without sufficient proof.
If I believe I'm taller than you, that's my opinion. If you walk up and are 218cm then I was wrong, but if I am insane or something I could retain the opinion.