Yes, beyond "lecture" there is also "lab". And a step further there are "studio" and "shop" classes. Lecture and talk is cheap. Talking with a microphone to a

Yes, beyond "lecture" there is also "lab". And a step further there are "studio" and "shop" classes. Lecture and talk is cheap. Talking with a microphone to a wall of students even cheaper. Youtube is the cheapest. Otoh, studio time, tools, materials. A vastly stronger sauce, but much more expensive.