The model itself is mechanical, your assumptions are critical

to make sure the model give you accurate estimates or not. If you put overly rosy assumptions, you will get great results and fool yourself willingly.

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oh, yes! -万枫- 给 万枫 发送悄悄话 万枫 的博客首页 (0 bytes) () 03/25/2012 postreply 09:13:52

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