Schlesinger and Miracles

George Schlesinger has recently presented a reply to Hume's argument concerning miracles. Schlesinger argues that probability theory and some simple assumptions about miracles show that testimony for a miracle increases the probability of God existing; furthermore this testimony can raise the probability of God existing enough that it is rational to believe that God exists. I argue that one of the assumptions that Schlesinger makes is false, and that the justification Schlesinger gives for it does not succeed. Thus I claim Schlesinger's reply to Hume fails.