Miniature digger arm could significantly slash excavator training time

Anyone who’s ever wrestled with a claw machine at an arcade can appreciate the difficulty of pulling and pushing joysticks in just the right way to get a mechanical arm to scoop up that one special toy. Coordinating the joysticks and connecting their movement to the claw’s motion is a type of “mental mapping” that is not immediately intuitive. (And it’s what arcade owners depend on to bring players back again and again.)