They do! I would know :) the problem isn't even the length, the problem is in the performance, the presentation, how cohesive the information is to a new learne

They do! I would know :) the problem isn't even the length, the problem is in the performance, the presentation, how cohesive the information is to a new learner. If an instructor plays a video in class, it doesn't work well. "Why are we here again?". If the video is assigned, then its ignored because students have to pay on the private loans that pay you. They have to optimize their life because late stage capitalism and government obesity is squeezing the life out of the younger generation. It's human nature but it's often ignored in favor of easy explanations. If you disagree then simply listen to the conversations students have when they think nobody is listening. The solution, which can be gained by asking any successfully educator (rarely professors), is this - you are a content creator. If you don't know how to play that role, then you can't educate well. The whole purpose of an instructor is to take difficult concepts and make them easier for the human ape brain to understand. We do this by leveraging visual recognition, memory, and social behaviors. For example an instructor that presents good information with a poor performance will result in poor communication of that information. This is so common I could walk into a classroom and example it right now. The problem can only be solved by competition with the existing orgs. There are far better methods, and you can find them if you search.