Learning without Teachers

I met Sugata Mitra at On-Line Educa in Berlin two years ago and was very impressed by his research work and his thinking on how children learn.
This most recent presentation at the TED conference opens up a timely debate on the role of instruction in education.
It is easy to be sceptical about the findings from his research. One could argue that such insights are gleaned from very particular contexts and further investigation of the actual learning processes involved is necessary.
However, I am not really surprised that these effects are in evidence and they are compatible with the work of other educationalists such as Dewey, Vygotsky and Bruner.
Have a look at the video and see what you think.
I would be happy to have your comments.