Since they had not made iterative development a habit, when they were stressed by trying to tackle a particularly abstract and difficult problem, they chose to work from their comfort zone.
由于他们没有将迭代开发作为一种习惯，所以当他们面临解决一个特别抽象的和困难的问题的时候，他们就会选择自己的舒适地带。
SAN DIEGO — One way to get noticed as a scientist is to tackle a really difficult problem.
美国圣地亚哥（SAN DIEGO）——作为科学家使自己被别人所知的一个方法就是去解决一个真正困难的问题。
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