他們表示，越來越多證據顯示，有些線上調查並不可靠，尤其是在呈現關於年輕族群的數據時，以及當受訪者參與調查可獲得報酬時。
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And, if a robot arm were to swing out towards you, for safety reasons you would want to be able to immediately stop it and push it back without harming yourself, reverse that motion instantly. For one thing, that requires a back-driveable actuator.
Article InformationAuthor, 本·哈頓（Ben Hatton）