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Ursprungligen postat av
Edgerton
Som det framgår av ditt inlägg vet du inte vad PPP är.
Jag gav dig en korrekt definition av PPP. Din kommentar ovan visar att du inte har en aning om vad PPP är.
SIPRI publicerar världens högst ansedda och mest citerade index för staters militärutgifter.
SIPRI skriver så om varför deras index använder market exchange rates och inte PPP:
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The reliability of such PPP rates is lower than for market exchange rates, since PPP rates are statistical estimates, calculated on the basis of collected price data for a basket of goods and services for benchmark years. Between benchmark years, the PPP rates are extrapolated forward using ratios of prices indexes, either GDP deflators or consumer price indexes. Like all statistical estimates they are subject to a margin of error.
Furthermore, GDP-based PPP rates are of limited relevance for the conversion of military expenditure data into US dollars. Such PPP rates are designed to reflect the purchasing power for goods and services that are representative of spending patterns in each country, that is, primarily for civilian goods and services. Military expenditure is used to purchase a number of goods and services that are not typical of national consumption patterns. For example, the price of conscripts can be assumed to be lower than the price of a typical basket of goods and services, while the prices of advanced weapon systems and of their maintenance and repair services can be assumed to be much higher. The extent to which this data reflects the amount of military goods and services that the military budget can buy is not known. Due to these uncertainties, SIPRI uses market exchange rates to convert military expenditure data into US dollars.
https://www.sipri.org/databases/mile...-questions#PPP
Notera särskilt:
"PPP rates are designed to reflect the purchasing power for goods and services that are representative of spending patterns in each country, that is, primarily for civilian goods and services. Military expenditure is used to purchase a number of goods and services that are not typical of national consumption patterns". Vilket är exakt vad jag skrev i min förra kommentar till dig.
CSIS själva skriver att deras användande av PPP är behäftat med svagheter, och därför problematiskt:
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However, PPP estimates do not account for specific cost differences of many military-related items.