This might lead us to lose hope when we donot understand why things don't work out the way we expect.

这可能导致我们失去希望，不明白为什么事情不按我们期待的方式。

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"People have (said) things like, 'Well, why don't we just all work straight day shifts or straight night shifts?' but you end up then not distributing the workload," Richards said.

Richards说“人们总在说：好啦，就直接让他们要么只上白班要么只上晚班啦，但是你这么做会影响工作量的。”

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Because most families have two children and don't understand why people who don't work should have things they don't.

BBC: The politics of welfare cuts

Transacting business seamlessly over the Internet means having a decent grasp of how things work, and more importantly, why they don't.

FORBES: Magazine Article