It's just like that. Even though it's not a live video but a recorded video, the definitions of terms are unclear, and the lecturer has a sense of the circuit terms, but he can't explain them easily. Therefore, it's a bit difficult for beginners. It would be appropriate to say that it's a circuit design lecture using Logisim for people who already have a concept of circuits. People who have basic knowledge of circuits and computer structures can just watch the Logisim tutorial, but I wonder if people who don't know will get anything out of it. I paid to watch it, but compared to other paid lectures, it feels like they're not prepared enough, and even though it's a recorded video, when I saw that they uploaded the video that showed all of the person's trial and error, and the monologues like "I don't know", I think they just didn't want to bother re-recording it.