Naturally Forming Dance Party

Since I saw it I've been meaning to link to this crazy video showing a dance party naturally developing. It's a fascinating look at the crowd mind. Today Jonah Lehrer picked it up on his blog, explaining:

This dance worked the same way. At a certain point, the group of awkward dancers becomes undeniable - they can no longer be ignored. And that is when the contagion begins. Once we start to wonder whether the dance is fun - or what that cluster of people is looking at - then it's only a matter of time before we too start to dance. Jane Jacobs, in other words, was right: "Life attracts life".