My point is about that validation of concepts. The illustration (of Phoenix) you understood, but did not apply it to the concept existence. I meant, if there is even one existent, no matter what it is, existence, as a concept, is established materially.
I could have used a better example, because "Phoenix" is a concept of an "entity" (in this case an imaginary one), but "existence" is actually a concept of a quality, like "red" or "round." In the case of qualities, so long as even one thing has that quality, the concept for that quality is valid.
The odd thing about the quality "existence" is, everything has it. That is why it is both universal and axiomatic. (I do not use the word "universal," as in epistemology, but to mean, always to all things true.) It is also why we talk about "existence" as though it were a thing, because, unlike other qualities, such as "red," which require there to be some existent things they are qualities of, the quality, "existence," for anything that has it, means that it is. That is why we can wave our arm, indicating the entire world, the universe, and heaven, too, and say, "everything is existence," which is to say, "everything that is, is." If everything had the quality red we could say everything is red, but we cannot say that about redness, but we can and must say it about existence.
Now, the question, "why is there something rather than nothing," supposes, "nothing," is a possible metaphysical universal fact. While the answer to the question, "what is in the box," can be "nothing," the answer to the question, "what is there," can never (logically, not temporally) be "nothing," for two reasons:
We have agreed that a concept is validated by at least one actual particular, but so long as not even one actual referrant can be discovered, the concept remains purely conceptual without material verity. The concept "nothingness" or "non-existense" (as metaphysically universal) is a concept which cannot have a referrent, by definition.
Hank
I'd still like an explanation for the statement
The concept existence does not require any particular existense, only some existense.
Did I understand that right in my previous post?