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July 3, 2026 

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EFFICIENT SEARCH: Decreasing marginal search benefit and increasing marginal search cost suggest that the most efficient search lies somewhere between zero effort and complete information. The most efficient level of search effort is given by the equality of marginal search benefit and marginal search cost.

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ARC ELASTICITY

The average elasticity for discrete changes in two variables. The distinguishing characteristic of arc elasticity is that percentage changes are calculated based on the average of initial and ending values of each variable, rather than initial values. Arc elasticity is generally calculated using the midpoint elasticity formula. The contrast to arc elasticity is point elasticity. For infinitesimally small changes in two variables, arc elasticity is the same as point elasticity.

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YELLOW CHIPPEROON
[What's This?]

Today, you are likely to spend a great deal of time surfing the Internet looking to buy either a T-shirt commemorating next Thursday or a birthday gift for your uncle. Be on the lookout for gnomes hiding in cypress trees.
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A lump of pure gold the size of a matchbox can be flattened into a sheet the size of a tennis court!
"Far and away the best prize that life has to offer is the chance to work hard at work worth doing."

-- Theodore Roosevelt, 26th US president

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