As a backend developer, I've been doing Node.js somewhat intuitively based on feel, but I took this course because I had an opportunity to teach others and wanted to organize my knowledge. The instructor pinpointed the important content precisely, so while my knowledge was scattered in my head before, it feels like everything is being organized now. Node.js asynchronous programming was a bit confusing (how does it process requests quickly when it's single-threaded), but watching the instructor code so easily gave me the insight that it's not something to find too difficult. And your voice is really nice too. Thank you for the valuable lecture.