The Next Big Idea WHAT IS LIFE? (Part 2): Consciousness, AI, and Aliens
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Dec 19, 2024 
In a thought-provoking discussion, astrobiologist Sarah Walker, author of "Life as No One Knows It," dives into the mysteries of consciousness and the origins of life. She ponders whether free will exists on a sliding scale and discusses the potential for co-evolution between humans and AI. The conversation explores the paradoxes of technology's advancement, the concept of planetary intelligence, and the implications of language as an evolving life form, all while questioning if aliens might already be among us.
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The Great Perceptual Filter
- The absence of alien life evidence isn't evidence of its absence; we might lack the technology to perceive it.
- Life evolves to perceive reality, and we may not be at a stage where we can detect alien life.
Shadow Biosphere and Creating Alien Life
- A shadow biosphere, an undetected life form with different biochemistry than known life, might exist on Earth.
- Creating alien life in a lab, although influenced by Earth's lineage, offers a tractable approach to studying alien possibilities.
Planetary-Scale Intelligence
- AI, built on human language and internet data, creates a planetary-scale intelligence different from individual human intelligence.
- This isn't about competition, but a co-evolving system where technology extends human capabilities.
