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Sean Carroll's Mindscape · October 14, 2024 · 75m
292 | Jonathan Birch on Animal Sentience
Jonathan Birch on the edge of sentience — where does conscious experience begin in the animal kingdom? His work for the UK government led to octopuses and crabs being recognized as sentient beings in law.
This summary was generated from show notes and public descriptions, not from a full transcript review. Details may contain inaccuracies.
Canon
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Birch: when the evidence for animal sentience is ambiguous, the most generous interpretation (assuming sentience) is both ethically and scientifically appropriate. The cost of wrongly denying sentience exceeds the cost of wrongly attributing it.
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Birch: octopuses have two-thirds of their neurons in their arms, not their brain. The gut-brain axis is just one example of distributed nervous systems — consciousness may not require a centralized brain.
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