Personality Power

If one person sitting on a stool can generate enough power to turn on four LED lights how much electricity could you generate from a rock concert?  A lot apparently - enough to move a train.  The idea is that of two graduate students at the Massachusetts Institute of Technology who believe the mechanical movement of hundreds or thousands (as opposed to "hundreds and thousands" which is a confectionery of sorts) can be milked to produce electrical power.  And it wouldn't just be concerts; you could also harness the collective energy of crowds of commuters, and shoppers.  While James Graham and Thaddeus Jusczyk even have a name for it - Crowd Farm (which makes me think again about wind farming) - they see it more as a learning area in the near future.  But if you could move a train - what else could you move?  A space shuttle? A launch would run to about 84 million strides, leading one of their project reviewers to quip (the highlight of the Associated Press report) “That’s one small step for man, eighty-four million, one-hundred sixty-two thousand, two hundred and three steps for mankind.”