Commenting on Gardner???s version of the problem, Bar-Hillel and Falk [3] note that ???Mr. Smith, unlike the reader, is presumably aware of the sex of both of his children when making this statement???, i.e. that ???I have two children and at least one of them is a boy.??? If it is further assumed that Mr Smith would report this fact if it were true then the correct answer is 1/3 as Gardner intend