I suddenly recall taking Indong's introductory/intermediate functional programming course in the past. Back then, the initially distant concept of 'functional' eventually expanded my programming world as I pondered and understood it. Although I haven't fully completed the first part of the multi-paradigm programming course, I'm already getting a sense of how various paradigms like functional and object-oriented programming intertwine and intersect. The concepts, which can feel abstract and difficult, are naturally becoming integrated into my way of thinking. Through the multi-paradigm programming course, I am once again experiencing the thrill of expanding my thinking, just like in those days. Thank you for providing such high-quality lectures every time.