Along these lines I still maintain the most useful exercise I ever engaged in here was the the Amanda Knox survey. We came at an issue which we had no better knowledge of than the general public. Nor was there any reason to expect us to agree- the issue bore no connection to the beliefs we share mostly as a result of self-selection (materialism, atheism). We independently looked at the evidence and mostly came up with similar results and then kept talking until nearly all disagreements were resolved. It still strikes me as a stunning example of how successful our methods can be. I'm desperate to do more of these. Of course, the issue is a lack of cases. We might try scientific controversies instead of legal ones. Unfortunately, few options will have the excitement of a murder trial involving pretty upper-middle class white girls. But using this stuff is so empowering and informative, I have to think we don't do this enough. (Though I have found the Diplomacy game helpful in this regard).