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J CURVE: An interesting relationship that exists between the exchange rate for a nation's currency and its balance of trade. In principle, the drop in a nation's exchange rate, or price of currency, makes the currency less expensive to "buy." With "cheaper" currency the price of domestic production is less and the price of foreign stuff is more, causing an increase in exports to other countries and drop in imports coming in from foreign producers. The economy thus moves in the direction away from a trade deficit and toward a trade surplus. However, the first few months after a drop in the exchange rate the balance of trade goes in the other direction, with any existing trade deficit increasing or any trade surplus shrinking. This occurs because the quantities imported and exported don't change in the short run, but the prices do. Because more is paid for the same amount of imported goods and receive less for the same amount of exports, total spending on imports increases, total revenue received from exports declines, and the movement is in the trade deficit direction. Once those quantities start adjusting in the long run, then we see a movement in the direction of a trade surplus.
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INCOME ELASTICITY OF DEMAND The relative response of a change in demand to a change in income. More specifically the income elasticity of demand is the percentage change in demand due to a percentage change in buyers' income. This notion of elasticity captures the buyers' income demand determinant. Three other notable elasticities are the price elasticity of demand, the price elasticity of supply, and the cross elasticity of demand.
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GREEN LOGIGUIN
[What's This?]
Today, you are likely to spend a great deal of time looking for the new strip mall out on the highway looking to buy either an AC adapter that won't fry your computer or a case for your designer sunglasses. Be on the lookout for slow moving vehicles with darkened windows.
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This isn't me! What am I?
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Cyrus McCormick not only invented the reaper for harvesting grain, he also invented the installment payment for selling his reaper.
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"Sometimes when you innovate, you make mistakes. It is best to admit them quickly and get on with improving your other innovations. " -- Steve Jobs, Apple Computer founder
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APT
Arbitrage Pricing Theory
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