They are difficult and expensive to access experimentally, and we cannot rely on our intuition to fill in the blanks. The patient accumulation of fact recommended by Francis Bacon, Isaac Newton, and Sherlock Holmes is thus no longer practical.
依然神秘的是为何它们可以被理解。美和可理解性之间的意义深远的联系是科学进步日益重要的源泉。今天的基础物理学前沿早已不是来自日常生活。要想用实验接近它们困难又昂贵，我们也不可能依靠直觉填补空白。因此，培根、牛顿和福尔摩斯所建议的耐心地积累事实已不再具有实践意义。