Scale of MOOCs - what is Massive?

I mentioned in my previous post that one of the first questions I'd like to explore is what it means to be massive, and what impact having a massive number of learners participate in a learning experience.

100K certainly is massive for the AI Stanford course, in terms of joiners. Even 10K in terms of 'full participants' is large by comparison to the typical undergraduate classroom of 500 (max). The typical classroom might have a teacher to student ratio of 1:25, or 1:50, so the degree to which each learner is receiving a personalised experience is pretty high, compared with 1:100K or 1:10K as seen in the Stanford MOOC. Do the undergraduates learn more? What does it mean to learn more anyway?

Norvig said that in writing an answer to a question on the discussion forum, he didn't complete writing it until someone else had answered for him. Another student. Can students really teach each other in this way? I guess when you have 100K people all enrolled in the same class, you are certainly going to find a higher level of diversity (prior experience, expertise) than your typical 100-500 undergraduate class.

So a good question here is "how can peers teach each other in a constructive, self-correcting manner?"

Back to the question of massive, 100K seems massive in terms of watching Peter Norvig's videos on AI, but even this pales in comparison to the nearly 2.5 BILLION (I actually cannot believe this now I've actually looked it up), who have watched the performer PSY perform "Gangnam Style".

But that's just mindless entertainment, right? Where is the peer supported collaborative learning in Gangnam Style? Well, there are over 4.5 million comments on his page. To what degree can we call anything there peer supported collaborative learning? I don't have time to read through it to find out, let's be honest, none of us do, but it is worth postulating right now that amongst those comments, there is probably something that constitutes learning, or knowledge construction, even in a traditional sense.

Where I am going with all this? After watching the video (almost) to the end, I'm not sure myself, except to say that economies of scale do not necessarily equate to successful learning outcomes.

Learning is more than this. So there needs to be more to a MOOC than a massive number of people aggregating around pieces of content. And for this we need to look at what constitutes learning, and how people can work with each other to construct meaningful interactions which develop and construct new knowledge and praxis.