Yes, I'm aware of that. But without 3rd party we're basically trusting the participants that it didn't happen. E.g. "I'll give you $500, but you also have too

Yes, I'm aware of that. But without 3rd party we're basically trusting the participants that it didn't happen. E.g. "I'll give you $500, but you also have too sign an NDA, so that people don't know we cheated." I don't want to imply that they cheated, just want to reiterate my original argument that the lack of transparency makes the experiment effectively invalid. Think Tesla and his claims about World Wireless system.