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Robot Vacuum Reviews Robot vacuums may reduce the need to sweep regularly however, they cannot replace plug-in models. Keeping them in top shape requires emptying the dust bin following each cleaning session, wiping down the sensors and cameras occasionally and changing filters and side brushes as needed. It comes with a decent-sized container and a quiet auto-empty. However, its obstacle avoidance gets caught in cords and socks, and it doesn't catch dirt close to baseboards. iRobot Roomba 694" The Ro

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Orienting to gaze-direction is widespread among animal species, but evidence for spontaneous use of gesture for direction is limited [1]. Remarkably, African elephants (Loxodonta africana) have been found able to follow human pointing, including subtle actions in which the contralateral hand is used, and in which the body silhouette is not broken [2,3]. The natural origin of this ability is puzzling, as the species is not reported to use trunk- or limb-gesture for showing directions [4]. One natural gesture, the 'periscope-sniff' presu