trancejeremy
Adventurer
Now, a word on atheism and agnosticism. Atheism is the position that gods don't exist - the reverse is theism, god(s) do exist. Agnosticism is the position that you can't prove that god(s) exist, gnosticism is the claim that you can indeed prove their existence. They are not the same question, but in non-theological circles they get conflated (badly) into one by laymen. It's a minor pet peeve of mine.
Most atheists are gnostics - they believe the lack of evidence for gods is itself proof of their nonexistence. The same holds true for most theists - they believe they can prove god exists, though to date all proofs ever offered have been subjective at best. Most agnostics choose not to believe in god(s) for lack of proof otherwise, I personally am an agnostic that chooses to believe in God despite the lack of objective proof. My logic for this lies outside the scope of what the forum rules will allow.
The thing is, despite the similarity in names, the opposite of an agnostic is not an gnostic. Gnosticism is a fairly specific type of religion, and the term has been around well before agnostics.
http://gnosis.org/welcome.html