Imagine casually doing a lecture demonstration in 1820 and accidentally discovering that electricity and magnetism are connected. Oersted was just showing his students some basic electrical stuff when he noticed a compass needle deflecting near a current-carrying wire—something nobody had ever connected before. "A surprise to be sure, but a welcome one" is the perfect reaction because this wasn't planned research; it was a happy accident that fundamentally changed physics forever. What makes this extra delightful is that Oersted's discovery laid the groundwork for electromagnetism, which eventually led to electric motors, generators, and basically everything that makes modern civilization run. All because a compass needle twitched during a demo. Talk about serendipity paying off—the man stumbled into one of the most important scientific discoveries of the 19th century.