I've been writing in "post modern" for a VERY long time. It
  unfortunately comes too easily to me. It sucks really, because I
  forget I do it and then I wonder why people don't understand me
  sometimes, unless they speak the postmodern language and yes,
  it's crap, but you said 'ontology' which sparked it. tongue
  emoticon

  Anyway, existence of a deity.

  Going by your definition:
  "i cannot claim knowledge of the existence nor the not existence
  of a god "

  Ok, this is the excluded middle I was talking about.

  You cannot claim knowledge of the existence and the not
  existence simultaneously because they appear to be a logical
  contradiction.

  But I can. Because I don't know. I can have superimposed beliefs
  that appear contradictory but they are not because they depend
  on context, not on text.

  If something doesn't make sense, ask and i'll rephrase.