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MARGINAL EFFICIENCY OF INVESTMENT: The anticipated rate of return on a capital investment project undertaken by a business firm. Businesses typically compare the marginal efficiency of investment, abbreviated MEI, on physical capital with interest rate returns on financial capital when deciding to undertake an investment project. Because different investment projects have different returns, businesses often have a range of alternatives projects from which to choose. Combining all projects throughout the economy gives rise to an investment demand curve relating investment expenditures to the interest rate.

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PHYSICAL FLOW

In the circular flow model, the transfer of goods and services from the business sector to the household sector and the transfer of resource services from the household sector to the business sector. The physical flow is usually illustrated as a counter-clockwise flow for a model with the product markets at the top, resource markets at the bottom, household sector at the left, and business sector at the left. The payment flow moves in the opposite direction.

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Today, you are likely to spend a great deal of time calling an endless list of 800 numbers trying to buy either storage boxes for your family photos or a large, stuffed giraffe. Be on the lookout for door-to-door salesmen.
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Ragnar Frisch and Jan Tinbergen were the 1st Nobel Prize winners in Economics in 1969.
"Progress begins with the belief that what is necessary is possible. "

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