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In reply to: The Thoughts of a Spiderweb | Quanta Magazine

For the octopus, with thousands of suckers studding symmetric arms, each of which can bend at any point, building a central mental representation of how to move seems like a computational nightmare. But experiments show that the octopus doesn’t do that. The brain doesn’t have to know how to move this floppy arm,” Cheng said. Rather, the arm knows how to move the arm.