-Papa! what's money?
-What is money, Paul? Money?
-Yes, what is money?
-Gold, and silver, and copper. Guineas, shillings, half-pence. You know what they are?
-Oh yes, I know what they are. I don't mean that, Papa. I mean what's money after all?
Little Paul Dombey, Dombey and Son, by Charles Dickens (1848)

Growth

The planning of economic policies is based on a problematic indicator. At least that was the opinion of the man that put it together...