River's head was still tilted, and she frowned slightly, looking down at her legs, back up at Jayne, then back down at her legs. "Jointed limb used for locomotion," she said, trying to be helpful. "Possible to use for manipulation of objects but it can be problematic. Contains thirty-one bones each. The current cultural norm women demands women shave them for attractiveness, but the real benefit is in reduced microbial population." She tried to think of something to add, since he seemed interested in the subject.