Investor Warren Buffet says America's "future prosperity" depends on its rail system.

VOA: special.2009.11.06

By "Present," We mean-- we will pick some part of the universe we want to study and we will ask, "What information do I need to know for that system at the initial time, like, right now, in order to be able to predict the future?"

我们所说的"现在",意思是,我们会选取客观世界某一部分来进行研究,然后我们就会问,我们需要什么信息去了解,初始时刻的系统,比如现在,进而能使我们能够预测未来呢

耶鲁公开课 - 基础物理课程节选

He says knowing which areas of the system are going to cause future problems will make the effort worthwhile, even if the goal of fifteen million is not reached.

VOA: special.2010.04.28