We spend ~10% of GDP moving people, ~3% moving goods. http://www.nber.org/papers/w20235
@robinhanson @pmarca That problem's already solvable with math: https://keybase.io/
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@paulbaumgart@pmarca I don't mean pretending to be a different person, but manipulating your face and voice to seem likable and trustworthy -
@robinhanson@pmarca Ah, different math, then! http://blackhat.com/presentations/bh-dc-08/Krawetz/Presentation/bh-dc-08-krawetz.pdf … (bit more of an arms race than public-key cryptography, admittedly) - 2 more replies
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