6. Suppose someone regards 0, 1 and 2 heads as being equally likely in two flips of the same coin and, in the case of exactly one head, considers heads on the first flip to be as probable as heads on the second flip. Compute the conditional probability of heads on the second flip given heads on the first flip. What would such a person have to believe about the coin and the person flipping the coin to sustain these beliefs? Discuss circumstances under which such beliefs might be plausible.