thanks very much for sending this, John. I hadn't seen this and it strikes me as relevant to several current topics of discussion.

David

On Fri, Feb 1, 2013 at 12:58 AM, John Unsworth unsworth@brandeis.eduwrote:

I came across this in connection with a class I'm teaching, and found it interesting:

http://www.youtube.com/watch?feature=player_detailpage&v=u2j578jTBCY

John

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