Cheers for the Underground Economy!

“Since we decided to adopt the leaf as legal tender, we have all of course become immensely rich.  But we have run into a small inflation problem owing to high leaf availability. That means the current rate is something like three major deciduous forests buy one ship’s peanut. In order to obviate this problem and revalue the leaf, we’ve decided on an extensive campaign of defoliation and burn down all the forests. I think that’s a sensible move, don’t you?”
– The Management Consultant to Fintlewoodlewix (later called Earth) – “Hitchiker’s Guide to the Galaxy”

It’s good to have a lot of money, assuming that not everyone has a lot.  Inequality is apparently bad when it gets too big, but it also makes the whole economy possible in small doses.  But how much money is really out there, and where is it going?  It turns out that this is more complicated – and hidden – than most thought.

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