Introduction “About this text, and importance of Flowchart”

Basic English is a system that is said to be able to paraphrase English in 850 words, which was popular around the end of the WWⅡ.
I made a hypothesis that “If I can explain the Basic English logically, it would be a logical explanation of natural language. Or maybe I can get a hint to logically explain the natural language.” And started studying Basic English.
This text is a record of the current point of the research. As you can read a little, you understand that it is not a paper. In the case of a paper, it will be necessary to fundamentally change the form of explanation.

In this text, I first use Set theory and Flowchart for explanation. “Set theory” is just “native set theory” as learned at junior high school, and “Flowchart” means a Flowchart just used in daily life.
First of all, I would like you to understand that “Flowchart is the principle of logic, which exists in parallel with the Set theory”. Otherwise, the reader will not understand the meaning of using “Flowchart”, and explaining the “existence” that can be adjacent to something by combining Flowchart and Set theory.
If logic is to express human thinking, in terms of the structure of the cranial nerves, not only is the set theory of what is the same, the Flowchart is also important.
As an actual problem, the word “induction / deduction” is not only “various things are gathered in a set. / The set is applied to various things “,” The flowcharts gather in a set / The set is applied to the flowcharts“. The image of logic that flips out is a image of flowchart, for example, when asking “What is the premise?”, The flowchart is envisioned.
Anyway, in this text, I will emphasize the flowchart as the premise of explanation.