Wit is defined as a clever, often humorous, expression that emerges from the surprising connection of distinct ideas. This concept emphasizes the creativity involved in thinking, showcasing how seemingly unrelated thoughts can merge to create something insightful or amusing. The beauty of wit lies in its ability to surprise and engage audiences, prompting them to rethink everyday ideas in novel ways.

In Patrick O'Brian's "The Hundred Days," this notion of wit resonates throughout the interactions and dialogue of characters. The unexpected links between their conversations often lead to humor or poignant insights, demonstrating the cleverness in human communication. O'Brian's writing exemplifies the very essence of wit, as it transforms ordinary moments into memorable exchanges imbued with deeper meanings.