guaziqiaqia
机会成本的英文为Opportunity Cost，（又称为择一成本、替代性成本）是指做一个选择后所丧失的不做该选择而可能获得的最大利益。稀缺性：资源相对于人类的需要总是少于人们能免费或自由取用的情形。联系：机会成本的存在必须建立在机会的稀缺性，如果不存在稀缺性，那么机会成本也就存在，因此可以看到稀缺性是机会成本的前提。
花花洒洒洒
Gold standard does not restore-failure to achieve monetary property irregularity of the gold standard, gold is a natural mineral, starting from the day the Earth was born, gold stock is fixed, but wealth in human society for thousands of years, is increasing production and accumulation. Fixed amount of currency, and rising wealth, forming dilemma: 1 if you want to stabilize the currency, then its purchasing power will increase with the growth in wealth, there will be no one willing to produce, just holding money.2 If you are going to price stability, it must reduce the purchasing power of money, there will be no one willing to hold money, money cannot flow. The right monetary system, are necessarily monetary increments and increase of social wealth, adapt to, and neck. In order to maintain currency and stabilize prices. And gold standard, precisely to stock fixed of gold for "this", to gold for this of currency system natural will crash constantly increased of tenure volume-cannot hedge hedge most important of features is scarce sex, is not regeneration sex, let we see gold whether has scarce sex, we knows gold is cannot consumption of, that is in world Shang gold impossible disappeared, and gold of mining does is increasingly more, daily are has new of gold was human mining out, so gold in world Shang of tenure volume is constantly increased of,And doom the ever-increasing number of gold is no scarcity, which also cannot truly value.Gold no value gold no any value, that is gold cannot application in any field, gold only of uses is decorative role, as made ring or necklace, and decorative role and cannot real of consumption gold, even gold from a people of neck Shang no has, that also only is ran to another people of neck Shang, and gold of exists total is in world Shang forever increased of. Manual
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