why 'you cannot buy with money'?

来源: 于 2010-08-21 23:42:20 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次

because it is priceless and it is not 'unbiased' as what they claimed in text book...

glad to talk to you on this issue, we can have a cup of coffee sometime, if you are in sydney!