translation.en: Scientists have been studying in recent years the phenomenon that they often describe as flow, that the design of our systems, whether natural or social, channel the flow of whatever runs through them.
translation.zh: 科学家近年来做了一些研究 他们提出了“流”这个概念 他们认为我们的体系，无论是自然的还是社会的 都会引导通过它的“流”的改变