Sloterdijk's 1999 lecture, known as the Elmau Speech, posited that all existing humanisms, including Heidegger's Fundamental Ontology, were rendered obsolete by the emergence of the so-called new media, and that education faced a similar fate. Taking a step further, the Elmau Speech establishes a connection between post-humanism in the sense of post-literary and postepistolary and Nietzsche's prophetic philosophy, suggesting the potential for genetic intervention in human life and education, thereby giving rise to social controversy. This paper begins by examining Heidegger's "Letter on Humanism," which offers criticism of traditional humanisms and introduces his concept of Fundamental Ontology. It then delves into Sloterdijk's critique of Heidegger in "Rules for the Human Zoo," as well as Sloterdijk's own conception of posthumanism, analyzing their implications for contemporary education.