> For the complete documentation index, see [llms.txt](https://www.oulan.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://www.oulan.com/2018/12/13.md). # 13 有多少信息，我们已经觉得已经说得清楚了，却仍然是听者各自理解？ 早安，世界。早安，未来。早安，表达。