"He's going to have to find a more succinct and specific voice for change, and he's probably going to have to put some money behind that, " he said.

WSJ: Paladino's Influence in Question

If the problem of small change led economists to understand how to run a system of token money, did some of the greatest economists of the early 20th century learn the wrong lesson from the system's success?

ECONOMIST: The lessons of sound money from 1,000 years' experience

They charge up to ten times more than informal channels, must change money at official rates and, in some countries, levy a tax on the exchange.

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On some occasions, the broker signaled Hertz to change his bids to specific numbers so that his employer could make more money.

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