Nothing is everything.

[Captain Scarlet]

It is incoherent to state that a thing which exists... exists? 0.o

No, you need to re-read what I said, I said inductively that nothing is an impossible state. To state that nothing exists is incoherent, as it is an absence of anything. The word nothing exists but this is of course abstract.

I agree that nothing is the absence of anything. And not having observed nothing within a place where there is not nothing means that it doesn't exist? I'll keep such "logic" in mind

Again you need to re-read what I said. Within the whole of reality we have never observed a state of nothing. There is a powerful inductive argument to suggest it doesn't exist. You cannot logically deductively conclude that nothing does not exist.

I do not presume the universe to have *had* a "T0", and infact disbelieve all proposals that the 'Big Bang' was the actual "start" of the universe. Part of the process i could believe. Start? No.

T0 refers to the start of time, not the start of the universe. It is perfectly consistent with a universe always having existed. Something which also seems more likely to me as a state of nothingness is incoherent. You seem to be arguing that nothing has also never existed by making this point.

And I would never make this "something cannot arise from nothing" argument... because nothing itself is something.

Again re-read what I said. I never said you did or would make such an argument...but nothingness clearly cannot be something according to the definition I have put forward and you agreed with.

Only there is no negative state of existence. There is nonexistence, and existence. Antimatter is positive. Matter is positive. That these interact explosively does not modify their state of existence.

This was not the point I was making. I said 'perhaps a more interesting point etc'. Not that Anti -matter is negative existence. In addition it isn't about existence or non-existence, but instead probabilities of certain states pertaining at the quantum level.

If you are going to postulate the nothing exists, then you need to be able to conceptualise and describe it. Speaking personally I cannot do either. The same is true of other useful concepts like infinity.