Unfortunately I agree, it is no big secret that tech as a segment has a fairly sizable portion of it's population with smartest guy in the room syndrome. The problem with smartest guy in the room syndrome is they already know the answer. Therefore they are not information seekers and they disregard anything that is objective to their world view. It is what killed Slashdot and sadly it is becoming unbearable here. Self policing does not help with this personality type, because they have no vested interest in anything other than everyone seeing them as the smartest guy in the room. Their concern about the community only extends to their recognition. It is a self centered world view and therefore I don't think that self enforced measures will work on this personality type. I almost think a third measure is needed, like a flag as abusive. Knowing that they can be flagged as abusive (even if the system dumps the flag and does not use it in any calculations). Will cause them to reflect on the policy, as it directly threatens their ability to use HN as a platform for self glorification.