You may find this specific technique interesting, in which you try to find the "expert minority" in the crowd, under the assumption that people who can better p

You may find this specific technique interesting, in which you try to find the "expert minority" in the crowd, under the assumption that people who can better predict the crowd's belief can also better predict the true outcome: https://en.wikipedia.org/wiki/Surprisingly_popular https://en.wikipedia.org/wiki/Surprisingly_popular