Can anyone afford college anymore? Would it help if we sold stock in students? Would Young Einstein have been a popular commodity?

In this week's episode of Big Think's Think Again podcast, host Jason Gots and sometime co-host Eric Sanders are joined byBrian Greene, theoretical physicist, director of the World Science Festival, and author of The Elegant Universe. An interview clip from economist Daniel Altman launches a discussion of why we bother to learn anything in the first place.

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