In Diana Gabaldon's novel "Voyager," a character named Grey expresses surprise upon hearing a claim about green plants preventing scurvy. His reaction suggests that he finds the idea unexpected and perhaps hard to believe. It highlights a moment of curiosity and disbelief regarding the relationship between nutrition and health, particularly in the context of historical dietary knowledge.

This interaction emphasizes the character's interest in learning and understanding medical concepts of his time. Grey's exclamation, "Wherever did you get that notion?" suggests a desire to challenge the statement and seek clarification, reflecting the tension between accepted beliefs and emerging scientific ideas during that historical period.