I'd like to understand the precise arguments so that I can understand the limits, so that I can think about Robin and Eliezer's disagreement, so I can get intuition for the Hanson/Cowen statement that "A more detailed analysis says not only that people must ultimately agree, but also that the discussion path of their alternating expressed opinions must follow a random walk." I'm guessing that past the terminology it's not actually that complicated, but I haven't been able to find the four hours to understand all the terminology and structure.