That assumes the goal of discussion is to reconcile views. If I meet someone who thinks radically different from myself that's for me an interesting opportunity to understand a new perspective.
Do you set apart a specific mix of circumstances for the pursuit of Aumann agreement?
If it's worth saying, but not worth its own post (even in Discussion), then it goes here.
Notes for future OT posters:
1. Please add the 'open_thread' tag.
2. Check if there is an active Open Thread before posting a new one. (Immediately before; refresh the list-of-threads page before posting.)
3. Open Threads should be posted in Discussion, and not Main.
4. Open Threads should start on Monday, and end on Sunday.