 This diagnosis is reminiscent of Carl Hempel’s solution to the Raven Paradox. At first blush, we deny that a white handkerchief could confer any degree of confirmation on ‘All ravens are black’. But this is incompatible with us regarding a white handkerchief as providing some confirmation of ‘All non-black things are non-ravens’. Since this contrapositive is logically equivalent to ‘All ravens are black’, whatever confirms one hypothesis confirms the other. Hempel advises us to regain consistency by conceding that a white handkerchief slightly confirms ‘All ravens are black’. Similarly, Hempel might advise us to slightly raise the probability of a borderline child being a child upon learning that she is a day younger than previously believed.