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February 24, 2026 

AmosWEB means Economics with a Touch of Whimsy!

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AGGREGATE EXPENDITURE DETERMINANT: A ceteris paribus factor that affects aggregate expenditures, but which is assumed constant when the aggregate expenditure line is constructed. Changes in any of the aggregate expenditures determinants cause the aggregate expenditure line to shift. While a wide variety of specific ceteris paribus factors can cause the aggregate expenditure line to shift, it's usually most convenient to group them into the four, broad expenditure categories -- consumption, investment, government purchases, and net exports. The reason is that changes in these expenditures are the direct cause of shifts in the aggregate expenditure line. If any determinant affects aggregate expenditures it MUST affect one of these four expenditures.

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BROWN PRAGMATOX
Your compete MICRO*scope for today

You are the type of person who is always ready and willing to help others. Family and friends occasionally strap large packages to your back for no apparent reason. Today, you are likely to spend a great deal of time looking for a downtown retail store looking to buy either 500 feet of telephone cable or a package of 4 by 6 index cards, the ones with lines. Be on the lookout for a thesaurus filled with typos. You should consider shopping at stores or businesses beginning with the letter R, but do not buy any products with a serial number or product code containing the number 598954. Your preferred shopping venue is thrift stores. Your special symbol is the comma (,).


Is this You?

As a Brown Pragmatox, you are down-to-earth and practical. You are hard working and industrious. You are frugal to the point that you might even refrain from making a purchase that you really, really need. Doing so often causes problems down the road. You definitely go with function over form and substance over style.


This isn't me! What am I?
BARRIERS TO ENTRY

Institutional, government, technological, or economic restrictions on the entry of participants into a market or industry. The four primary barriers to entry are: (1) resource ownership, (2) patents and copyrights, (3) government restrictions, and (2) start-up cost. Barriers to entry are a key reason for market control and the inefficiency that results. In particular, monopoly, oligopoly, monopsony, and oligopsony often owe their market control to assorted barriers to entry. By way of contrast, perfect competition, monopolistic competition, and monopsonistic competition have few if any barriers to entry and thus little or no market control.

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A Somewhat Defective Look At PRODUCT SAFETY

WAIT! STOP! My shoe's untied! And my blasted shoestring is tangled! Fortunately I have my handy OmniStraight shoestring straightener, a product developed by a team of former NASA scientists that's designed to straighten and untangle even the most convoluted shoestrings. OOPS! You might want to continue your pedestrian journey without me. It seems as though my handy OmniStraight shoestring straightener has inadvertently dissected my shoestring, mangled the upper half of my jogging shoe, and introduced several gashes to the top of my foot. As I faint face-first onto the sidewalk from the loss of blood, you can consider some of the ins and outs of my predicament.
Tell me more...

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APLS

Natural gas has no odor. The smell is added artificially so that leaks can be detected.
"In war, there is no second prize for the runner-up."

-- Omar Bradley, US Army general

MP
Marginal Product
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