I'm not sure he's every written about it publicly yet. It was something he shared with me in conversation.

k00b

I looked around for the "transportation system" source of 

 that you mentioned, because I want to think about this boats / airplanes thing.  I read a couple but didn't see one that was obviously what you referring to.  Do you have a link?

bitcoin

_Broken Money_ book club, part 2

elvismercury

I looked around for the "transportation system" source of @MaxAWebster that you mentioned, because I want to think about this boats / airplanes thing.  I read a couple but didn't see one that was obviously what you referring to.  Do you have a link?