This article seeks to demonstrate the importance of the philosophical work of Mary O'Brien. It does so by showing how O'Brien's work counters Heidegger's strict differentiation between the ancient Greek metaphysics of presence and modern technological thinking. O'Brien's ideas indicate two critical lacunae in Heidegger's interpretation of the ancient Greeks: the latter's attempt to secure paternity and their overlooking of birth as a form of unconcealment. According to O'Brien, the way in which we understand and experience human reproduction influences both our sense of self and our sense of continuity. According to Heidegger, the way in which things are brought forth or unconcealed is fundamental to our being‐in‐the‐world. Neither O'Brien nor Heidegger lived to see the current advancements in reproductive technology, but both would consider them significant and meaningful beyond their social, political, and even ethical implications. Furthermore, recent reproductive technology draws attention to birth as revealing—although as increasingly Enframed. Rapid changes in reproduction may reveal Enframing as Enframing, and also show that technology is not something that we can simply master. But for this to occur, we must take into account the radical critique and rethinking of Heidegger's philosophy implied by O'Brien's thought.