I've taken many lectures so far, but most of them are for beginners and only explain the basics. However, this lecture covers everything from the basics to the advanced, and I felt that a lot of time was spent on the design of the lecture itself and the preparation of the lecture materials. If you give another lecture like this, I think I'll enjoy it! Personally, if the lecturer gives a lecture related to functional programming and Rx, I think I'll pay again and enjoy it. Thank you for the great lecture!