When I disagree with a rational man, I let reality be our final arbiter; if I am right, he will learn; if I am wrong, I will; one of us will win, but both will profit.
Ayn Rand
I think that if the other person convinces you that they are right and they are right, then it should count as "winning the argument". It's the idea that has lost, not you.
Here's the new thread for posting quotes, with the usual rules: