Thoughts
People will pretty much never admit to your face that they were wrong and you changed their mind. So if you're playing the game of
changing people's minds, you can't hope for that outcome. You have to make your argument as well as you can, and then give the person space. If you've made your arguments well, and if you're right, then the person will eventually change their mind—but they will insist you weren't the reason. They might go do some research themselves to confirm that what you're saying is true, and then the facts will convince them. Maybe the next time they talk to someone else about the issue they won't use a point that you've refuted. Maybe if you talk to them again in a year, they'll deny ever disagreeing with you. But people's minds don't change quickly.