If you're interested in ideas and in the future, this video is guaranteed to make your eyes go wide.
Juan Enriquez is an impressive - and humorous - speaker. He delivers grim news about the current state of the US economy, but also suggests a mind-blowing future that won't be like anything we've seen before. Really.
One of the best uses of 20 minutes I can think of.
If you have trouble playing this video, try it here: http://www.ted.com/talks/view/id/463
Visit TED.com to hear lots more smart, insightful people.
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