We perform many minor miracles through trial and error, excessive use of brute force, and lots and lots of testing, but--so often--it's not enough.

我们总是通过试错，过度的使用暴力（译者注：可能是指破坏程序结构的代码），大量的测试去完成一项工作；尽管很漂亮，但是常常是不够的。

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According to NASA spokesman Ken Davidian, the space agency spends huge sums in the trial and error phase of testing an idea.

NPR: School Bus Driver Wins NASA Contest

The result of the focus on testing cancer drugs on all patients is painful trial and error.

FORBES: Magazine Article

They pack up, promise to tighten their idea, do some testing with real businesses and go through some more trial and error.

FORBES: Why Intuit Is More Innovative Than Your Company