I've seen Jonathan Haidt mentioned on Less Wrong a few times, and so when I saw an article about (in part) Haidt's new book elsewhere, I thought it would be an interesting read. It was, but not for the reasons I expected. Perhaps it is unfair to judge Haidt before I have read the book, but the quotes in the article reveal some seriously sloppy thinking.
Haidt believes that there are at least six sources of moral values; the first five are harm/caring, fairness, loyalty, authority, sanctity/disgust. Liberty was recently added to the list, but doesn't seem to have made it into this article. He claims that liberals (in the American sense), care... (read 1639 more words →)
No, because it's possible that there genuinely is a possible total ordering, but that nobody knows how to figure out what it is. "No human always knows what's right" is not an argument against moral realism, any more than "No human knows everything about God" is an argument against theism.
(I'm not a moral realist or theist)