Whether you are right or wrong there are ways that you can win an argument, especially if you use a scientific approach to doing so. You need to approach the conversation in a non-aggressive engaging manner, have your facts straight and mimic the body language of your opponent when possible but not in a mocking way. Infographics are available demonstrating these techniques and also including the pitfalls to avoid in an argument. Everything you need to win an argument is here.
Read more: How to Win an Argument, According to Science (Infographic)