Do Atheist know for fact there is no god? These are straight forward questions no tricks?

Atheism does not claim knowledge. Atheism and theism claim belief. Gnosticism claims knowledge and Agnosticism claims no knowledge. Examples. Agnostic atheist:Does not believe in god but does not claim to know there is no god, Gnostic theist:Believes there is a god and claims to know for certain there is a god, Agnostic theist:Believes there is a god but does not claim to know there is, Gnostic Atheist:Does not believe in a god and claims they know there is no god. I, like many other atheists, are also agnostic and do not see enough evidence to support the idea that god exists.