The captain of a ship looked into the dark night and saw a light in the distance. Immediately he told his signalman to send a message, “Alter your course ten degrees south.” He promptly received a reply, “Alter your course ten degrees north.”
The furious captain sent another message, “Alter your course ten degrees south. I am a captain!” Soon another reply was received, “Alter your course ten degrees north. I am seaman third class Jones.”