Sean Carroll's Mindscape: Science, Society, Philosophy, Culture, Arts, and Ideas 106 | Stuart Bartlett on What "Life" Means
11 snips
Jul 20, 2020 
Stuart Bartlett, a postdoctoral researcher at Caltech, dives into the intriguing complexities of defining life. He discusses a revolutionary framework based on four pillars: dissipation, autocatalysis, homeostasis, and learning. Bartlett emphasizes that life isn't a simple concept but rather a collection of traits. The conversation also explores the potential for synthetic and extraterrestrial life, the challenges of cooperation in evolution, and how these principles can reshape our understanding of what it means to be alive.
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Open-Ended Evolution Challenges
- Open-ended evolution, the continuous increase in complexity, hasn't been fully achieved in ALife.
- Digital organisms often reach a saturation point due to parasitic code piggybacking on stable replicators.
Cooperation Barrier in Evolution
- The cooperation barrier hinders open-ended evolution. Selfish individuals benefit short-term by stealing resources from cooperative groups, which over time prevents the development of novel features.
- This also applies to biological evolution and is studied in evolutionary game theory.
Social Insects and Evolution
- Social insect behavior challenges the traditional Darwinian model, as worker ants don't reproduce yet contribute to the colony's success.
- This raises questions about how altruistic behavior evolves, and the role of group selection.
