Wittgenstein has been used to develop ideas of initiation and education in the field of philosophy of education , especially drawing on his account of how children , as infants, become full-blown members of their language community. In order to further refine this Wittgensteinian concept of "initiation " I look into the liminality of certain propositions in a parenting manual that I believe to be exemplary of recent trends in parenting support . These propositions are on the threshold of becoming framework or methodological propositions . The idea of liminality draws on certain sections of Wittgenstein's On Certainty and Remarks on the Foundations of Mathematics . It will prove to be helpful to get a deeper understanding of what might be the import of the propagation of new language games in the field of parenting support .