Strong arguments don’t always persuade everyone … It’s not enough for an argument to be strong, valid and sound to be persuasive. You can have an argument for which every premise is genuinely true, and where every conceivable flaw in the argument is negated and still, not have it be persuasive. There will almost always be someone who either misunderstands the argument, or blindly believes the opposite of a premise, in face of facts. Human beings aren’t always logical and don’t always believe scientifically proven cause and effect. Religious and cultural beliefs can be too hard to overcome. So even the best arguments can have disbelievers. . What a great argument!! Remember, to persuade someone is to convince them or change their mind into believing what you wanted them to believe, and what you were trying to get them to believe. Whereas justifying, is giving them a reason to believe your conclusion.