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MARGINAL PROPENSITY TO INVEST: The proportion of each additional dollar of national income that is used for investment expenditures. Or alternatively, this is the change in investment expenditures due to a change in national income. Abbreviated MPI, the marginal propensity to invest is the slope of the investment line used in the analysis of Keynesian economics. As such, it also plays a role in the slope of the aggregate expenditure line and the multiplier effect.
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PRODUCT INNOVATION An innovation of a new product, technology, or idea that generates a beneficial improvement in society and the economy; one that is fundamentally different from existing products, technologies, or ideas. The contrast is with a process innovation, which is an improvement in an existing product, technology, or idea.
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WHITE GULLIBON
[What's This?]
Today, you are likely to spend a great deal of time wandering around the downtown area wanting to buy either a pair of handcrafted oven mitts or a coffee table shaped like the state of Florida. Be on the lookout for pencil sharpeners with an attitude.
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This isn't me! What am I?
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Helping spur the U.S. industrial revolution, Thomas Edison patented nearly 1300 inventions, 300 of which came out of his Menlo Park "invention factory" during a four-year period.
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"The world is not dangerous because of those who do harm but because of those who look at it without doing anything. " -- Albert Einstein, physicist
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RJE
RAND Journal of Economics
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