练习材料：
[Day 1737 2019-06-28]
Lesson 14-2 The Butterfly Effect
Suppose every sensor gives perfectly accurate readings of temperature, pressure, humidity, and any other quantity a meteorologist would want. Precisely at noon an infinitely powerful computer takes all the data and calculates what will happen at each point at 12.01, then 12.02, then 12.03...
The computer will still be unable to predict whether Princeton, New Jersey, will have sun or rain on a day one month away. At noon the spaces between the sensors will hide fluctuations that the computer will not know about, tiny deviations from the average. By 12.01, those fluctuations will already have created small errors one foot away. Soon the errors will have multiplied to the ten-foot scale, and so on up to the size of the globe.
卖萌的ScalersTalk第四轮新概念朗读持续力训练Day230 20190629
朗读时间：57s/57s
任务配置： L0+L4
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[Day 1738 2019-06-29]
Lesson 15-1 Secrecy in industry 工业中的秘密
Two factors weigh heavily against the effectiveness of scientific research in industry. One is the general atmosphere of secrecy in which it is carried out, the other the lack of freedom of the individual research worker. In so far as any inquiry is a secret one, it naturally limits all those engaged in carrying it out from effective contact with their fellow scientists either in other countries or in universities, or even, often enough, in other departments of the same firm. The degree of secrecy naturally varies considerably. Some of the bigger firms are engaged in researches which are of such general and fundamental nature that it is a positive advantage to them not to keep them secret.
卖萌的ScalersTalk第四轮新概念朗读持续力训练Day230 20190629
朗读时间：51s
任务配置： L0+L4
知识笔记：
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