Darwin had a special position as guest and social equal of the captain, so junior officers called him "sir" until the captain dubbed Darwin Philos for "ship's philosopher", and this became his suitably respectful nickname.
Darwin tiña unha posición especial como hóspede e un igual social do capitán, polo que os oficiais subalternos chamábano "señor" (sir) ata que o capitán o alcuñou Filos, significando "filósofo do barco", e este converteuse no seu alcuño respectuoso e adecuado.