Oh dear, Gongdori-nim... I am truly sorry for not meeting your expectations. However, your current course completion rate is 8%, and you haven't yet taken any of the major lectures (motor control, circuit design, firmware, etc.), so it seems you might feel that way. After you have completed all the major lectures, if you let us know where you felt there was a deficiency, we will supplement and update the lectures accordingly. Thank you for taking the course.

That engineering guy seems to just be a hater..😆😆