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PERFECT COMPETITION AND EFFICIENCY: Perfect competition is the idealized market structure that achieves an efficient allocation of resources. The conditions of perfect competition, including (1) large number of small firms, (2) identical products sold by all firms, (3) freedom of entry into and exit out of the industry, and (4) perfect knowledge of prices and technology, ensure that perfect competition efficiently allocates resources. This is in fact the purpose of perfect competition: a market structure that illustrates perfection, the best of all possible resource allocation worlds. The real world falls short of this perfection.

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PHENOMENON

An event or action that is subject to investigation, analysis, and explanation using the scientific method. Phenomena are the sorts of things that science seeks to explain. They can be common events, like the blowing wind, or unusual, like the extinction of the dinosaurs.

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APLS

GRAY SKITTERY
[What's This?]

Today, you are likely to spend a great deal of time visiting every yard sale in a 30-mile radius hoping to buy either a birthday greeting card for your aunt or a wall poster commemorating the moon landing. Be on the lookout for the happiest person in the room.
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This isn't me! What am I?

John Maynard Keynes was born the same year Karl Marx died.
"He who has begun has half done. Dare to be wise ‚ begin! "

-- Horace, poet, satirist

ARCH
Autoregressive Conditional Heteroskedasticity
A PEDestrian's Guide
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