The problem is no system is immune to incompetent/uncooperative users. If in reddit/hn-like sites users use up/downvote as "okay, this is interesting discussio

The problem is no system is immune to incompetent/uncooperative users. If in reddit/hn-like sites users use up/downvote as "okay, this is interesting discussion"/"this adds nothing to the topic" it works reasonably well. If they decide that it is just same as like/dislike button (as is common on many bigger subreddits), then we get back to promoting echo chambers