Evidence god does not exist

[Edwardo Piet]

Understanding what something isn't is very much understanding what it is.

Not in and of itself. Since you failed to completely understand what I meant by "X". I'll create something imaginary instead and give you no information whatsoever about it (therefore it doesn't matter what I call it, hence why I just said "X" but you didn't get it). There's this thing that I can now claim to exist: It's called a "Grugwoodoozor", now in order to find out what this thing is, whatever it is, we need to find out what it is not. Do you see how ridiculous that is yet? How can we possibility find out what it is not if we don't have even the slightest bit of information to go by of what it is?

Knowing something isn't animal or vegetable lets us know our subject is mineral in a game of animal, vegetable and mineral.

Mineral already has a definition.

X = 1/26th of the alphabet.

I hope you understand that by "X" I obviously meant "insert anything here". X could be anything, and the point is, since it could be anything, whatever that is, we can't understand it through what it is not until it is defined in some way of what it is first.

Everything non-physical that we know of is either conceptual (a product of thought) or thought itself (unless you're a radical materialist, in which case the latter doesn't apply).

That's non-physical in the sense of mental. But mental is still physical in the sense that the mind (or consciousness within the brain in other words) is still part of the physical universe. As are concepts therefore as they reside in the brain. God almost certainly doesn't exist but the concept (well, the many concepts) of God still exists and they reside in the brain, which is all part of the physical universe, and in that very real sense, is physical