Users posting downright nonsense and noise don’t even belong on the site, and bad arguments can be ignored or addressed instead of just anonymously downvoting them.
Downvoting mechanism is one way of making sure that obvious nonsense-posting gets visibly and quickly discouraged. Without it, there would be more nonsense.
I don’t think that’s actually true. There are very few nonsense posts (or at least, very few that get voted down); and when there are, downvoting doesn’t always discourage the poster. When I see a post with a negative score, it’s more often one that is controversial, or that disagrees with LessWrong dogma, or that was made by someone unpopular here, or that is in the middle of a flamewar between two users, or that is part of a longer conversation where one poster has triggered an “omega wolf” reaction from the rest of the pack by acting conciliatory.
Downvoting mechanism is one way of making sure that obvious nonsense-posting gets visibly and quickly discouraged. Without it, there would be more nonsense.
I don’t think that’s actually true. There are very few nonsense posts (or at least, very few that get voted down); and when there are, downvoting doesn’t always discourage the poster. When I see a post with a negative score, it’s more often one that is controversial, or that disagrees with LessWrong dogma, or that was made by someone unpopular here, or that is in the middle of a flamewar between two users, or that is part of a longer conversation where one poster has triggered an “omega wolf” reaction from the rest of the pack by acting conciliatory.