In Margaret Atwood's Oryx and Crake, the notion of reality and fantasy is explored through the concept of dreams and their tangible impact on existence. The speaker suggests that the wonders of the world, which may seem magical or dreamlike, are only substantial as long as people continue to believe in and invest their imagination into them. Once the collective dreaming ceases, these extraordinary elements begin to deteriorate, losing their significance and presence.

This quote highlights the fragility of beliefs and experiences that shape our understanding of reality. It emphasizes that what we perceive as real can often be mere illusions, rooted in our shared aspirations and creativity. The decay of these fantasies speaks to a broader commentary on the human condition and the importance of maintaining our dreams to give life meaning and vibrancy.