The title is too abstract for what I'm writing, so I'll change it when I come up with a better title.
It is associated with several concepts - What you thought was one concept is two nested concepts - Both "is X" and "is not X" are compatible. - Liskov Replacement Principle
There are additional stories not mentioned in those.
When person 1, who is thinking of X in the narrow sense, is speaking on the assumption that "the elements of X are A", person 2, who is thinking of X in the broad sense, thinks "1 is speaking on the assumption that 'the elements of X are A', which is wrong, let me tell you".
When person 2, who is thinking of X in the broad sense, asserts that there are elements of X that are not A, person 1, who is thinking of X in the narrow sense, thinks, "There is obviously no such thing, person 2 is wrong, let me tell you."
what is said is complex
I've been trying to express myself without using natural language as much as possible, but when I do it this time
be composed as follows
Hmmm, well, but if you put it together with the diagram, can you figure it out even if you're not good at math? (Understand?)
relevance - nested set - nesting
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