But I can very easily imagine a collection of defined predicative generic functions working happily for a long time before the ambiguouscase is encountered.
但是在碰到这些模糊性之前，我很长时间都认为定义一些断言通用函数就可以了。
2
In both cases, the outcome of the transaction is ambiguous until the transaction is rolled back, but the duration of the ambiguity is milliseconds in one case and possibly many minutes in the other.
Even on the more 'normal' side - market sizing questions within normal case questions - interviewees often freeze up at the thought of tackling this ambiguous estimation question.