This is in response to Warren Buffett's quote that gold has no utility and people watching from Mars would be confused.
"Federal Reserve Notes: They get printed on ordinary pieces of paper, or something. We use expensive presses and lots of ink and make these things, then we stick them in a vault and pay people to stand around guarding them.
They have no more utility than ordinary pieces of paper, which we leave lying around on our desks.
Anyone watching from Mars would be scratching his head." –