I think boom and bust is a result of man's excessive greed in th

來源: insight777 於 2012-01-15 23:52:39 [檔案] [博客] [舊帖] [給我悄悄話] 本文已被閱讀：次 (101 bytes)

回答: I don't agree with Summers 由 CapriMoon 於 2012-01-15 11:42:37

The advancement of Science and technologies only causes structural changes in human societies.

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