more half bitten thru shit ================================ the sunny illusion the prison of complacence created by the notion of comparative advantage dr pangloss basks in a false sun conventional trade theory contains a concept that seems lost on non economists comparative advantage not absolute advantage thats easy no comparative or relative advantage the example of a two tasks and two workers system say typing and photocopying one person may be better at both but what will be the agreed to allocation not fifty fifty except for job time the copy sets per minute original type ups per minute the less fast typest will do all the copying since typing is the longer task and thus the bottle neck this is easy not so with two sets of type/copy teams exchanging out puts if two different currencies mediate trade is the result of different prices between similar products in different markets when joined the new overall market price will direct production in the two regions now market merged take oranges and apples mexico and california say Mexico can deliver an orange for 5 pesos and an apple for 1 2 pesos the ratio is then 5/2 or 2 +1/4 oranges for each apple in California say its 4 cents for an orange and 10 cents for an apple ratio 10/4 or 2 +1/2 oranges per apple comparatively its cheaper for mex growers to up apples and cut oranges and for cal visa versa here’s where one added complication can come in the exchange ratio between currencies whats the ratio between pesos and cents if its one to one then california has an absolute advantage in both apples and oranges mexican buyers will buy cents and then buy cal fruit saving one peso on each orange and 2 pesos on each apple mexican growers are shut out if the full calmex demand can be met at those prices by cal growers or if reduced levels of mex fruit can’t be produced cheaply enough for mex growers to retain a part of the market one outside possibility is for the peso to fall below the penny to say 2pesos to the penny all else remaining the same now the cal growers are out of the market without devaluation only increasing costs of production as production quantity itself increases can avoid this radical live or die outcome is a small notion called diminishing returns if both oranges and apples cost more per unit to grow as more are grown then the cal/mex production mix shifts to equalize cost ratios notice not necessarily absolute costs only ratios so the cal/mex production cost ratios are the same in cents lets say 10/5 in pesos say 20/10 with the peso/cent ratio 2/1 we’re all set apples will go one way oranges the other when things settle down the whole system will at least produce as many of one and more of the other then before trade begins both demand and supply changes are relevant even if cal growers are still absolutely better at both fruits from a land and labor input count in two systems with n exchangible products the patterns can get complex if various technologies don’t obey the decreasing outputs dictated by the models otherwise a trade gap opens up not to mention the end of any one product only production outfits where the ecos hide is in the devaluation option there is some currency ratio where traded products will begin to reverse their flow closing the gap only if absolute advantage was not avoidible through enough devalation could one system destroy the trade production of another technical advantage may be absolute but exchange ratios really determine trade flows if you don’t want to see ratios adjust you can scenario A take local currency surplus buy up local real assets or scenario B loan locals your currency to pay for surplusPosted by pinky at January 27, 2004 03:35 AM
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