Made up 2 useful terms to think about:
LPNE: locally positive network effect (eg PayPal mafia)
GNNE: globally negative network effect (eg climate change)
To complete the obvious 2x2…
GPNE: Moore’s law, literacy, vaccines
LNNE: abusive family, dying small town
Conversation
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I sense something virtual has just got to have what you're looking for... I can't come up with anything, but I have a 6 year olds knowing that something has got to be out there....
Like Facebook but non-carcinogenic.
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What about Bitcoin - pretty positive locally in developing countries, not yet a global force because of vested interests and general first world complacency



