Types of agnosticism
Below are various types of agnosticism.
Weak and strong agnosticism
See also: Atheism and agnosticism and Antitheism and Denials that atheists exist
The proponent of the weaker form of agnosticism does not make a claim to knowledge about existence, but he simply suspends from making a decision. A suspension of decision, in terms of logic, does not have a truth value, and therefore they are not making an argument. The proponent of the stronger form goes a step further and makes a claim to knowledge by saying, I know that the existence of God cannot be known.
Apathetic agnosticism
See also: Apatheism and Atheism and apathy
Apathetic agnosticism is not knowing if God/gods exists exist and not caring if God/gods exist.
Agnostic theism vs. agnostic atheism
Further division lies with in two kinds of agnosticism: Agnostic Theism and Agnostic Atheism. Agnostic Theists believe in a god but do not claim to know there is a god. Agnostic Atheists do not believe in a god but do not claim to know there is not a god. Thus the distinction between Agnostics as opposed to Theists or Atheists is they do not claim knowledge even if they claim a belief. So contrary to what some may believe, they are not opinion-less on the subject.