Consciousness, a fundamental aspect of human experience, may not be exclusive to biological systems on Earth. Researchers Jeremy Pober and Eric Schwitzgebel argue that consciousness can arise in radically different physical materials found elsewhere in the cosmos. The authors propose the concept of “substrate flexibility,” suggesting that consciousness is not bound by specific biological substrates but can exist in various forms of matter.
The universe is vast, with an estimated one trillion galaxies, each containing numerous planets with diverse environments. This abundance of potentially habitable worlds raises questions about the existence of conscious life beyond Earth. Pober and Schwitzgebel estimate that at least a thousand behaviorally sophisticated species have existed or will exist in the observable universe.
The researchers draw on astrobiology to suggest that life on other worlds may have evolved using different chemical building blocks, such as sulfur compounds, organoborates, or silicon-based chemistry. They argue that it’s unlikely every behaviorally sophisticated species shares the same substrate, given the vast diversity of environments and constraints in the universe.
The Copernican Principle of Consciousness posits that just as Earth does not occupy a privileged position in the universe, we should not assume our planet occupies a unique position on the map of consciousness. This principle challenges the idea that only entities with similar biochemistry are capable of inner experience.
While Pober and Schwitzgebel don’t claim AI systems are conscious, they raise questions about the possibility of consciousness in non-biological substrates. They propose that we should be open to the idea of AI consciousness once we acknowledge that consciousness does not require human biology.
The researchers’ argument encourages a broader understanding of consciousness, beyond the confines of biological systems on Earth. By exploring the concept of substrate flexibility and the Copernican Principle of Consciousness, Pober and Schwitzgebel inspire us to reconsider our assumptions about the nature of conscious experience in the universe.
Source: https://www.sci.news/othersciences/philosophy/substrate-flexible-consciousness-14855.html