I assume 主持人选了一扇里面 is considered as [the second door], the rest

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Probability measures uncertainty. What already happened is not u -燕京十景- 给 燕京十景 发送悄悄话 (85 bytes) () 09/30/2014 postreply 10:57:51

Sure enough what happened may change future probability, but you -燕京十景- 给 燕京十景 发送悄悄话 (90 bytes) () 09/30/2014 postreply 10:59:56

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