I think in the context of HN, that's not what you want to find out. If I thought the other person just wanted a fight, I'd ignore them. If I thought a good dis

I think in the context of HN, that's not what you want to find out. If I thought the other person just wanted a fight, I'd ignore them. If I thought a good discussion might be had I'd go something like "I think X and Y is good evidence of A. Why do you think that isn't the case?"