Yet another 25 people take rice and fish (collected during the previous day, of course) and make tantalizing sushi rolls.

FORBES: Sushi and Malinvestment

At Canoe in Atlanta there's tuna, tuna, tuna - a triple play of sushi rolls, seared raw tuna and marinated raw tuna.

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Eventually, their boats and nets start to wear out, and production falls to the point where the islanders no longer enjoy five sushi rolls per day.

FORBES: Sushi and Malinvestment

In Japan Setsubun looks set to become as much a boom for stores and restaurants that sell sushi rolls as Valentine's Day has become for other retailers.

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Then there are Japan's brokers and salarymen, who in addition to mixing gold flakes into their coffee, also used slithers of gold to liven up sashimi and sushi rolls.

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In this way, every day there are a total of (let us say) 500 sushi rolls produced, allowing each islander to eat 5 sushi rolls per day, day in and day out.

FORBES: Sushi and Malinvestment