Apologies for interjecting. I would like to make it mandatory to comment when down-voting. In addition, if that comment is down-voted, then the original down-vo

Apologies for interjecting. I would like to make it mandatory to comment when down-voting. In addition, if that comment is down-voted, then the original down-vote is restored. So, rather than trying to weed out poor up-votes, leave it to the community to manage the down-voting. Thus, a quality counter argument will be safe from down-voting and, hopefully, out-vote the poor quality post. But if there's one thing I've learned from a lifetime in tech, it's that attempts at adjusting behaviour by indirect means always leads to unexpected behaviour.