Explore a 52-minute conference talk that delves into the world of API design and user experience. Discover the key factors that make some APIs beloved by developers while others are despised. Examine patterns and anti-patterns in API design through comparisons of successful and less successful APIs in the market. Gain insights into the subtle differences between user-friendly interfaces like jQuery and more challenging ones like java.util.Calendar. Learn valuable lessons on creating APIs that developers will love to use, and understand the pitfalls to avoid when designing your own interfaces. Engage in a fun and thought-provoking discussion about the elements that contribute to a positive API user experience.