Sure enough what happened may change future probability, but you

来源: 燕京十景 于 2014-09-30 10:59:56 [] [旧帖] [给我悄悄话] 阅读数 : 0 (90 bytes)
本帖于 2014-09-30 11:02:10 时间, 由普通用户 燕京十景 编辑

but you should not factor in how rare the past event was, because it has already happened.

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