The storied probability question of the two-child family with at least one son was a while ago in original form, and again lately with a few twists. In the latter post, I suggested /page__view__findpost__p__247003 about the information given in the puzzle, and in some cases the probability asked for might be 1/2. In the first topic I had argued most vehemently for 1/3, although I never stated the assumptions that are needed to support that answer. Assumptions were also debated in