sisyphean labor the robot rolls the nut part to the top of the mountain

man person labor work concept hill mountain sisyphus business stone heavy computer fiction future gadget humanoid mechanism robot metal robots scifi science scientific technology toy metaphor rock uphill struggle task silhouette sisyphean effort hard illustration determination difficult mythology power push strength up punishment symbol vector challenge motivation ball boulder character hopelessness moving cartoon human problem persistence greek weight background difficulty roll idea 50s 60s art comic kitsch pop retro vintage