"non qualificato o non affidabile" / "not qualified or not reliable" is already a subjective opinion about the person, so it can't be used as reliable to the logic.
Again, even if someone is common considered as an expert about an object this means that everything is going to say on the topic is right, it will be again appeal to the authority and also popular belief (because many think that he is an expert)
LukeStonehm
commented
8 years ago
"non qualificato o non affidabile" / "not qualified or not reliable" is already a subjective opinion about the person, so it can't be used as reliable to the logic.
Again, even if someone is common considered as an expert about an object this means that everything is going to say on the topic is right, it will be again appeal to the authority and also popular belief (because many think that he is an expert)