Inspired by the recent skepticism of the double crux technique, I thought I'd launch a thread to try using double crux, and productive disagreement in general, with other LessWrongers. I think this will work best with some structure, so I've laid out some rules.
Discussions are to be one-on-one. Do not jump into others' debates.
The default platform for discussions will be the comment thread, but participants can use others at their discretion, such as instant messaging platforms or maybe even video chat. Try to keep a shareable record so others can potentially learn from it.
deadsimplechat.com is a setup-free, anonymous option for text chat.
To participate in the thread, either
make a top-level comment listing beliefs that you think might generate productive disagreements, as well as any preferences you have about discussion format,
or reply to someone else's top-level comment, selecting one of their beliefs that you disagree with. Don't make any arguments in this reply, just say which belief you're selecting, and what platform you'd like to discuss it on if the top-level commenter gave multiple options.
The top-level poster and the replier then conduct their discussion in replies to that reply, or in the agreed-upon outside platform.
Inflammatory topics are better discussed out-of-band. When listing a topic you think likely to be inflammatory, flag it as such and don't offer in-comments discussion as an option.
Remember to try to find double cruxes!
If you want to comment about the rules or the general idea of this thread, there's a meta post for that.