Opinion is merely stating one's personal belief in a situation/statement/etc. Therefore, whether or not the situation/statement can be proven false, the belief exists.
The difference:
"My pet is a dog." <-Statement, can be proven true or false through simple observation.
"Dogs are the best pets." <-Opinion, based on complex conditioning due to past experiences and personal evidence that result in a person believing dogs to be superior to other pets.
While later experiences(an experiment) or presented evidence(an argument) may lead to the CHANGING of that opinion, the opinion itself is not wrong.
(I chose to ignore the concept of the morals 'right and 'wrong', because that's just a whole 'nother can o' worms that I don't want to open)
The difference:
"My pet is a dog." <-Statement, can be proven true or false through simple observation.
"Dogs are the best pets." <-Opinion, based on complex conditioning due to past experiences and personal evidence that result in a person believing dogs to be superior to other pets.
While later experiences(an experiment) or presented evidence(an argument) may lead to the CHANGING of that opinion, the opinion itself is not wrong.
(I chose to ignore the concept of the morals 'right and 'wrong', because that's just a whole 'nother can o' worms that I don't want to open)