An extensive explanation from 'dang, 10 months ago: https://news.ycombinator.com/item?id=20864278 https://news.ycombinator.com/item?id=20864278 An excerpt: >

An extensive explanation from 'dang, 10 months ago: https://news.ycombinator.com/item?id=20864278 https://news.ycombinator.com/item?id=20864278 An excerpt: > The counterargument is that, just as with downvote-reason-giving, downvote-reason-reviewing would be dominated by the same forces as downvoting in the first place. You wouldn't get more signal, just more complexity, plus a lot more work—both because of the reviewing itself, and because of meta-quarrels about reasons and reason-reviews. There's been a lot of comments and other Ask HNs on this and related topics in the past. The search box can at the bottom of the page can help you find some of this.