Meaning of the existence of a complete collection

The meaning of the existence of a Complete Self-Study is that even if everything is reset, with this book alone, one can start over from scratch. It seems that in the modern world, books require a certain level of basic knowledge. However, a Complete is a book that explains things from the basics in a systematic way. It's like a Framework for things with the name 'document', similar to a Tutorial. This was mentioned in How to Build a Scientific Civilization After This World Disappears.

In other words, it can be considered an Encyclopedia. But what is interesting is How should an encyclopedia be?.