周末灌水，贴个图。

Read0nly

[quote]回复  ctcld

你的有些问题挺好，俺没答案，只能捡俺能回答的说。

“图是从何而来。”
从网上Google来的，引用时未做深究。从图上的标识看，应当是经济学业内的人做的， 两幅图，不同的来源，曲线一致，所以俺权当是业内公认的数据。有误的话请纠正。

“如果照你的说法，美国人现在的生活品质大大不如几十年前。”
货币贬值不能同生活质量简单挂钩。货币贬值是就单位货币的购买力而言，而生活质量与人均货币量的整体购买力有关。人民币从文革十年未变到现在贬值不是一星半点，谁又说生活不如从前。

“眼下就是比现实，QE来的购买力有没有下降，汇率如何”
俺想说这正是美国人的高明之处。 搞得别人通货膨胀，自己好像没什么事。以俺的愚见，中国的通胀迟早要回输到美国。美国舆论高调美国目前没有通胀担忧是想推迟加息。一旦加息银行的真实面目就露出来了，远不会有现在季报显示的那么乐观。对于美元现在的购买力，个人感觉可能差异很大，俺觉得通胀已经来了。

Read0nly

[quote]Laoda, could you please explain what's "美元的购买力"? Compared to what? oil? gold? rice?...

以下是维基百科的解释。愿意了解更多，自己顺藤摸瓜多Google一下吧。

Purchasing power
From Wikipedia, the free encyclopedia
Jump to: navigation, search

Purchasing power is the number of goods/services that can be purchased with a unit of currency. For example, if you had taken one dollar to a store in the 1950s, you would have been able to buy a greater number of items than you would today, indicating that you would have had a greater purchasing power in the 1950s. Currency can be either a commodity money, like gold or silver, or fiat currency like US dollars. As Adam Smith noted, having money gives one the ability to "command" others' labor, so purchasing power to some extent is power over other people, to the extent that they are willing to trade their labor or goods for money or currency.

If one's money income stays the same, but the price level increases, the purchasing power of that income falls. Inflation does not always imply falling purchasing power of one's money income since it may rise faster than the price level. A higher real income means a higher purchasing power since real income refers to the income adjusted for inflation.

For a price index, its value in the base year is usually normalized to a value of 100. The purchasing power of a unit of currency, say a dollar, in a given year, expressed in dollars of the base year, is 100/P, where P is the price index in that year. So, by definition the purchasing power of a dollar decreases as the price level rises.

The purchasing power in today's money of an amount C of money, t years into the future, can be computed with the formula for the present value:

    C_t = C(1 + i)^{-t}\, = \frac{C}{(1+i)^t} \,

where in this case i is an assumed future annual inflation rate.

SmartyJones

源济

ctcld

回复 21# Read0nly


麻烦你做点更深入的研究：
1，把其它各国的货币的购买力都比较一下。看看是强了还是弱了？如果结论是都弱了，你就要怀疑你的立论。
2，再把QE 来的货币的购买力比较一下，有无迅速下降？

lanz