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Study Guide to Man, Economy, and State with Power and Market

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20 <strong>Study</strong> <strong>Guide</strong> <strong>to</strong> <strong>Man</strong>, <strong>Economy</strong>, <strong>and</strong> <strong>State</strong> <strong>with</strong> <strong>Power</strong> <strong>and</strong> <strong>Market</strong><br />

there is an excess dem<strong>and</strong> (“shortage”) <strong>and</strong> buyers increase their<br />

offer price.<br />

There is a tendency for one price <strong>to</strong> rule over a market. If<br />

there weren’t, then arbitrage opportunities would exist; a middleman<br />

could buy low <strong>and</strong> sell high.<br />

6. Elasticity of Dem<strong>and</strong><br />

The elasticity of dem<strong>and</strong> is the ratio of the percentage<br />

change in quantity dem<strong>and</strong>ed <strong>and</strong> the percentage change in<br />

price (the negative sign is omitted). If the elasticity is greater<br />

than one, the dem<strong>and</strong> for the good is “elastic,” while if the elasticity<br />

is less than one the dem<strong>and</strong> is “inelastic.” Note that a<br />

higher price will lead <strong>to</strong> lower <strong>to</strong>tal spending on a good if its<br />

dem<strong>and</strong> is elastic, while a higher price will lead <strong>to</strong> higher <strong>to</strong>tal<br />

spending if the dem<strong>and</strong> is inelastic.<br />

7. Speculation <strong>and</strong> Supply <strong>and</strong> Dem<strong>and</strong> Schedules<br />

Supply <strong>and</strong> dem<strong>and</strong> take in<strong>to</strong> account all fac<strong>to</strong>rs influencing<br />

people’s selling <strong>and</strong> buying decisions. In particular, someone<br />

may refuse <strong>to</strong> sell a good at a certain price, because he speculates<br />

that the price of the good will rise in the near future. Or, a<br />

buyer may refrain from purchasing a good, because he speculates<br />

that the price will soon fall. Such speculation (if correct) “flattens”<br />

the supply <strong>and</strong> dem<strong>and</strong> curves, <strong>and</strong> speeds the approach<br />

<strong>to</strong>wards equilibrium.<br />

8. S<strong>to</strong>ck <strong>and</strong> the Total Dem<strong>and</strong> <strong>to</strong> Hold<br />

Rather than analyzing traditional supply <strong>and</strong> dem<strong>and</strong>, we<br />

may also underst<strong>and</strong> price formation using the concepts of <strong>to</strong>tal<br />

s<strong>to</strong>ck <strong>and</strong> <strong>to</strong>tal dem<strong>and</strong> <strong>to</strong> hold. The s<strong>to</strong>ck of a good is the number<br />

of units existing at any given time. The <strong>to</strong>tal dem<strong>and</strong> <strong>to</strong><br />

hold consists of the number of units desired by buyers, plus the

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