The fundamental point in fabricating a chain reacting machine is of course to see to it that each fission produces a certain number of neutrons and some of these neutrons will again produce fission.
格式塔理论的基本公式可以这样表达:存在一些整体,它们的行为不是由其个体元素决定的,而是部分过程本身由整体的内在性质决定。