An Optimus robot was standing behind a table full of water bottles at a Tesla store in Miami over the weekend when it suddenly raised its hands to its temples, lost its balance, stumbled backward, and fell flat on its back. It was a theatrical sequence — and a clear sign to robotics experts that Tesla is using teleoperators for its much-hyped bots. When the operator removed their virtual reality headset, the theory goes, the robot goes right on down too. | Futurism