Collaboration doesn't scale. You can't have 500 people in a room all discussing one topic. Well you can - but it won't be efficient. And people will actually

Collaboration doesn't scale. You can't have 500 people in a room all discussing one topic. Well you can - but it won't be efficient. And people will actually end up learning less. I think - past 30-35 people, collaboration starts losing its value. But yes - if there are only 20-30 people in the room - collaboration works better than the lecture format. (Paulo Freire actually taught English to Brazilian farmers in less than 60 days by using a collaborative approach instead of a lecture approach. His techniques are worth studying. But his techniques don't work for TED type events where huge audiences show up.)