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October 6, 2026 

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MARGINAL UTILITY: The additional utility, or satisfaction of wants and needs, obtained from the consumption or use of an additional unit of a good. It is specified as the change in total utility divided by the change in quantity. Marginal utility indicates what each additional unit of a good is worth to a consumer.

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PERFECT COMPETITION, REALISM

Perfect competition is an idealized market structure that does NOT exist in the real world. While some real world industries might come relatively close to one or two of the four key characteristics of perfect competition, none matches all four sufficiently that they can be declared PERFECTLY competitively. Some industries come close on the large number of small firms and the identical product characteristics. A few industries have relatively good, although not perfect, information about prices and technology. However, almost all industries fall far short of the perfect mobility characteristics.

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GREEN LOGIGUIN
[What's This?]

Today, you are likely to spend a great deal of time watching the shopping channel hoping to buy either a computer that can play music and burn CDs or a T-shirt commemorating last Friday (you know why). Be on the lookout for crowded shopping malls.
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This isn't me! What am I?

Mark Twain said "I wonder how much it would take to buy soap buble if there was only one in the world."
"Advice is like snow ‚ the softer it falls, the longer it dwells upon and the deeper it sinks into the mind. "

-- Samuel Taylor Coleridge, poet

CBA
Cost Benefit Analysis
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