But the basic tasks by the robot with exposed wires and electronics — as well as a later, next generation version that had to be carried onstage by three men — was a long way from CEO Elon Musk's vision of a human-like robot that can change the world.The demo didn’t impress AI researcher Filip Piekniewski, who tweeted it was “next level cringeworthy” and a “complete and utter scam.” He said it would be “good to test falling, as this thing will be falling a lot.”“None of this is cutting edge,” tweeted robotics expert Cynthia Yeung.Tesla's goal, he said, is to make an “extremely capable” robot in high volumes — possibly millions of them — at a cost that could be less than a car, that he guessed would be less than $20,000.Employees told the crowd in Palo Alto, California, as well as those watching via livestream, that they have been working on Optimus for six to eight months.“When you’re trying to develop a robot that is both affordable and useful, a humanoid kind of shape and size is not necessarily the best way,” said Tom Ryden, executive director of the nonprofit startup incubator Mass Robotics."