Learn how to convince people by asking questions, not by contradicting or arguing with what they say. You will have much more success and seem much more pleasant
I’s about guiding them to the answer. It’s the difference in showing someone how to fix a bike, and walking them through fixing their bike. They’ll be more interested, and will come out with a better understanding. If you know they’re wrong, don’t tell them they’re wrong; ask questions that will make them rethink their point and realize they’re wrong.