 In the simplest form of the model, two agents start with random assignments to a set of 20 sentences with consistent assignments to their negations. Arguments are added randomly, starting from a blank slate, and agents move to the coherent position closest to their previous position, with a random choice in the case of a draw. In variations on the basic structure, Betz considers (a) cases in which an initial background agreement is assumed, (b) cases of “controversial” argumentation, in which arguments are introduced which support a proponent’s position or attack an opponent’s, and (c) in which up to six agents are involved. In two series of simulations, he tracks both the consensus-conduciveness of different parameters, and—with an assumption of a specific assignment as the “truth”—the truth-conduciveness of different parameters.