Hello, Mango! This is the instructor :D First of all, I would like to express my sincere gratitude for taking the <JavaScript Object-Oriented Programming: Learn by 'Building' rather than just theory (Strategic AI Edition)> course and leaving such a valuable record. I feel a great sense of accomplishment knowing that you are enjoying the course while reviewing object-oriented concepts. I truly hope that the process of experiencing the essence of the object-oriented paradigm by building an actual strategic AI system—rather than just staying in theory—will be of practical help in strengthening your solid design skills. I will be rooting for your continued growth and enjoyment throughout the rest of your learning journey. To show my appreciation for the trust you've placed in our curriculum, I would like to offer you a small benefit. If there are any additional courses you wish to take, please feel free to contact us at our inquiry email, jeony0535@naver.com. I will send you a discount coupon immediately upon confirmation. Thank you once again for your precious time and kind words. I am sincerely cheering for your growth! :D