real life, I’d say: “Ok guys, let’s sit in this room, everyone turn off their recording devices, and let’s talk, with the agreement that what happens in this room stays in this room.”
The one time I did this with rationalists, the person (Adam Widmer) who organized the event and explicitly set forth the rule you just described, then went on to remember what people had said and bring it up publicly later in order to shake them into changing their behavior to fit his (if you’ll excuse me speaking ill of the dead) spoiled little rich boy desires.
So my advice, based on my experience, and which my life would have been noticably better had someone told me before, is: DON’T do this, and if anyone suggests doing this, stop trusting them and run away
Which is not to say that you are untrustworthy and trying to manipulate people into revealing sensitive information so you can use it to manipulate them; in order for me to confidently reach that conclusion, you’d have to actually attempt to organize such an event, not just casually suggest one on the internet
Several of these questions are poorly phrased. For instance, the supernatural and god questions, as phrased, imply that the god chance should be less than the chance of supernatural anything existing. However, I think (and would like to be able to express) that there is a very small (0), chance of ghosts or wizards, but only a small (1) chance of there being some sort of intelligent being which created the universe-for instance, the simulation hypothesis, which I would consider a subset of the god hypothesis.