By the way, not all speculations are bad, it can speed up

来源: 于 2009-03-04 10:26:41 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次

new inovations and increase productivity. Speculating on real estate is very bad which caused this disaster.

Bank notes are needed, nobody want to carry gold or silver around.