仅剩的问题可以分为三类 ： “ 重要的科学难题 ” （ 比如重力学和电学的统一 ） ， 这类研究不仅需要巨大的投资，也离不开一流的科研设备 ； “ 资料收集 ” ， 是与考古发掘和生物/基因调查相关的实际工作；以及“科学信息问题 ” ， 比如应对艾滋病或者全球变暖。
The remaining options are said to fall into three groups: “grand scientific quandaries” (such as uniting gravity and electricity into one theory) which require a huge investment and first world infrastructure; “data collection,” which is the field work associated with archeological digs and biological/genetic surveys; and “science-informed problems,” such as combating AIDS or addressing global warming.