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HERFINDAHL INDEX: A measure of concentration of the production in an industry that's calculated as the sum of the squares of market shares for each firm. This is an alternative method of summarizing the degree to which an industry is oligopolistic and the relative concentration of market power held by the largest firms in the industry. The Herfindahl index gives a better indication of the relative market control of the largest firms than can be found with the four-firm and eight-firm concentration ratios.

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INVESTMENT BUSINESS CYCLES

The notion that business cycles are caused by changes in business sector investment expenditures triggered by the natural ebb and flow of market conditions. This investment explanation of business-cycle instability rests on the proposition that the seeds of each subsequent business-cycle phase are planted during the current phase. An expansion creates the conditions that cause a contraction and a contraction creates the conditions that cause an expansion. This explanation suggests a critical role for government intervention and stabilization policies to correct the business-cycle problems of inflation and unemployment.

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Today, you are likely to spend a great deal of time going from convenience store to convenience store trying to buy either a T-shirt commemorating the 2000 Olympics or a genuine fake plastic Tiffany lamp. Be on the lookout for malfunctioning pocket calculators.
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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.
"Now is the only time there is. Make your now wow, your minutes miracles, and your days pay. Your life will have been magnificently lived and invested, and when you die you will have made a difference."

-- Mark Victor Hansen

LRAS
Long Run Aggregate Supply
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