iRobot公司曾经研制出供处置炸弹和和其它危险品的较大型的机器人，而现在面临的挑战是，要把所有东西塞到一个5磅重的的盒子中而不会散包。
IRobot has been building larger robotic rovers that are used for bomb disposal and other hazardous tasks, but the challenge was putting everything into a five-pound package that doesn't fall apart.
Netflix公司（全球十大视频网站中唯一收费站点）斥资一百万美元奖励能改进其推荐引擎的人。 同样，Kaggle网（一个众包①预测模型平台）主办了统计挑战大赛。
Netflix used a $1 million reward to upgrade its recommendation engine, while similar statistical challenges are hosted by the website Kaggle.
我们问到闭包是否仍然值得争论，以及JD K 7是否足以应对并发性方面的挑战。
We asked whether closures are still worth arguing about, and whether JDK 7 goes far enough in meeting challenges like concurrency.
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