 What of the second option, that is, denying the  CPA?[19]  The main argument put forward in favor of the CPA is that any differences in agents’ probabilities should be the result of their having different information only, that is, there is no reason to think that the different beliefs that agents have regarding the same event are the result of anything other than their having different information. However, one can reply that this argument amounts simply to a restatement of the Harsanyi  Doctrine.[20]