A man working on something alone in an industrial setting .
It is improbable that an assembly line is made of robots except for one man monitoring the robotic arms .
It is improbable that an assembly line is made of robots except for one man monitoring the robotic arms .
It is probable that an assembly line is made of robots except for one man monitoring the robotic arms .
An assembly line is made of robots except for one man monitoring the robotic arms .