Today's post, The Mechanics of Disagreement was originally published on 10 December 2008. A summary (taken from the LW wiki):
Reasons why aspiring rationalists might still disagree after trading arguments.
Discuss the post here (rather than in the comments to the original post).
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If you consider most LWers "aspiring rationalists", the above should describe most of the disagreements, but somehow it does not seem so.
It would be a useful exercise if people picked a recent comment thread they have no stake in and analyzed the reasons for disagreement. Any takers?