Following the JPA Basics, I have now completed the JPA Utilization section! This lecture helped me get a feel for object-oriented design, which I had been lacking. I also learned how to design efficiently. When it comes to object-oriented design, I knew in my head that it was just inheritance, polymorphism, and encapsulation, but when I actually tried to make it object-oriented, I tended to make it however I wanted. I feel like I have gotten a little closer to object-oriented design through this lecture. I also ordered the book Object-Oriented Facts and Misconceptions that you recommended. Thank you for always uploading great lectures. I will write a review for the next lecture as well.