In fact, it is a technology stack that is not used in the company, but I listened to it for my personal project. What I felt while watching other lectures is that the lectures are not necessarily intended to teach only how to use a specific technology stack. When I think about the internal workings or what problems these technologies were developed to solve, I think that the scope of understanding other libraries or frameworks written in various languages also expands. I hope that there will be good lectures that can help me understand the principles in the future^^!