And the sarcastic remark adds no value, it merely antagonizes the other poster without really explaining what's a wrong with the post, and sets a more combative

And the sarcastic remark adds no value, it merely antagonizes the other poster without really explaining what's a wrong with the post, and sets a more combative tone that is not really seen as desirable here. Tone alone can make the difference between a productive discussion and a non-productive debate and HN seems to do a relatively good job at keeping a tone that leads more toward discussions and less toward debate.