It might be a bigger problem in fields where there's a bimodal distribution of skill. That is: There's a group that "gets it" and a group that doesn't. In subje

It might be a bigger problem in fields where there's a bimodal distribution of skill. That is: There's a group that "gets it" and a group that doesn't. In subjects that mostly require acquiring knowledge, that's not likely to happen. Individual students might not know the answer to a specific thing, but they won't be completely lost for the entire lecture. But if a subject requires learning new ways to think, I could totally see this happening. These are just some preliminary thoughts, so I wouldn't give them a ton of credence. Still, I could totally see different specialties having different distributions of comprehension.