&gt; For several domains I know something about, the [HN] comments are <i>painfully</i> misguided and just bad<p>But in the case of HN, if you leave them that way in a way it&#x27;s your fault :-P  Meaning, that you could write a paragraph or two setting the rest of us straight.  The exception is subjects that are extremely politically sensitive and controversial, in which your paragraph or two could be downvoted to oblivion and start a uselessly derailed thread, no matter how incredibly polite you are.  If HN has &#x27;groupthink&#x27; opinion that is completely wrong on kernel scheduling, you can set it right, politely and by sticking to the facts.  If HN has &#x27;groupthink&#x27; opinion that is completely wrong on a political or other controversial issue, I would politely abstain.