I decided to continue discussion started in the post Debate around the Khan Academy by drawing attention to a collection of readers’s responses in the Washington Post blog, Khan Academy: Readers weigh in. In my opinion, these responses demonstrate why public discussion of mathematical education is so difficult: even professional mathematics lecturers and teachers have no language and shared conceptual framework for description of what is actually happening in the intertwined processes of teaching and learning mathematics. Then what can we expect from laymen: parents, administrators, politicians?