 So this agent’s betting dispositions make her susceptible to a set of bets that are individually acceptable but jointly inflict a sure loss. Such a set of bets is called a Dutch Book. The above agent is susceptible to a Dutch Book, which sounds bad for the agent. So what has gone wrong? The problem seems to be this: Belief guides action, and in this case, bad beliefs result in bad actions: garbage in, garbage out. Therefore, the agent should not have had the combination of credence .75 in \(A\) and .30 in \(\neg A\) to begin with—or so a Dutch Book argument would conclude.