Gnostics?

[robvalue]

Yeah... it depends entirely on what you mean by "know". If "know" means "possessing absolute certainty" then no one knows anything.

And of course, people can "know" things that are wrong; to avoid this you have to state that what they know must be true. But since no one knows what is true, it's an impossible and useless criteria.

I avoid calling myself a gnostic atheist simply because it does generally imply a level of absolute certainty. The nearest I can come to such certainty is announcing a logically inconsistent being cannot exist. If someone presents a case containing such inconsistencies, then their claim requires the laws of logic to be breakable to work. In such a case, they must abandon logic itself as unreliable and so can't make an argument at all.

In the casual use of the word "know", then I know there is no God. I don't actually know what a god is, but I have a reasonable idea what people think a god is, even if they can't describe it properly. And I "know" it's in their imagination only, as much as know anything at all.