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tripping on cracks in the sidewalk while fumbling with our smart phones, life would seem to be twice as difficult for the eight-legged octopus. The brains of cephalopods like Octopus vulgaris are considerably simpler than humans’, yet they seem to have no trouble keeping track of their many flexible appendages. To figure out how, researchers conducted a frame-by-frame analysis of videos of octopuses as they crawled over objects. The secret behind the animal’s dexterity comes from the radial symmetry of its legs, the team reports online today in Current Biology.