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May 28, 2026 

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MARKET SHARE: The fraction of an industry's total sales accounted for by a single business. In general, market share is a "first-guess" indicator of a firm's market control. If, for example, a company has a market share of 100 percent (that is, a monopoly), then you can rest assured it has a substantial amount of market control. A company with a 25 percent market share has less, but still notable, market control. In fact, when you get right down to the bottom line, the phrase "market share" is only worth mentioning for oligopolistic firms with a significant degree of market control. There really is no market control for a monopolistically competitive firm with a 0.00000001 percent market share.

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GREEN LOGIGUIN
Your compete MICRO*scope for today

You are the type of person who is logical and rational, reasonable and analytical, judicious and sensible, even to the point of aggravation. Family and friends are tired of you using the phrases "on the one hand" and "other the other hand". Today, you are likely to spend a great deal of time calling an endless list of 800 numbers hoping to buy either a wall poster commemorating next Thursday or a pair of gray heavy duty boot socks. Be on the lookout for strangers with large satchels of used undergarments. You should consider shopping at stores or businesses beginning with the letter N, but do not buy any products with a serial number or product code containing the number 144671. Your preferred shopping venue is strip malls. Your special symbol is the equal sign (=).


Is this You?

As a Green Logiguin, you seek a balance in life and your market activities. You are logical and reasonable, always seeking to weigh costs and benefits, pros and cons, ups and downs, ins and outs, goods and bads. You are the embodiment of yin and yang. You know that there are two sides to every story and every market exchange. Sometimes you buy. Sometimes you sell. You search out the best deals, with the highest quality and lowest price.


This isn't me! What am I?
MARGINAL PROPENSITY FOR GOVERNMENT PURCHASES

The change in government purchases induced by a change in income or production (national income or gross domestic product). The marginal propensity for government purchases (abbreviated MPG) is another term for the slope of the government purchases line and is calculated as the change in government purchases divided by the change in income or production. The MPG plays a role in Keynesian economics. It augments the slope of the aggregate expenditures line and is part of the multiplier process. A related marginal measure is the marginal propensity to consume.

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Fact 3: Our Unfair Lives

Across the interstate from the Mega-Mart Discount Warehouse Super Center resides the Shady Valley Central Town Sprawling Hills Shopping Mall -- a prime example of our economy's climate-controlled, suburban shopping phenomenon. Our pedestrian's ramble through the economy would be totally inadequate if we did not spend at least one day strolling past the endless rows of stores with their displays of clothes, shoes, electronics, clothes, luggage, clothes, cheese pretzels, and of course clothes. Our pedestrian trip, however, is not concerned with the products exhibited beyond the stylish glass windows. No, our jumping off point is the gadzillions of people who pass us by, bump into us, get in our way, and generally make our shopping experience comparable to a commuter train during the rush hour.

Those who comprise the shopping crowd are short, tall, young, old, fat, thin, black, white, happy, and sad. More importantly for our present discussion, however, is that some are rich and some are not-so-rich. A few of the wealthier shoppers actually buy the products framed by the picturesque windows that line the air-conditioned quaint mid-way of Shady Valley Central Town Sprawling Hills Shopping Mall. Others must be content to ogle the prominently displayed products or perhaps buy an occasional cheese pretzel.
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APLS

The first "Black Friday" on record, a friday marked by a major financial catastrophe, occurred on September 24, 1869 -- A FRIDAY -- when an attempted cornering of the gold market induced a financial crises and economy-wide depression.
"A pint of sweat saves a gallon of blood. "

-- General George Patton

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