Huraian
Undecided: Neti-Neti Neti-Neti: Neither this, nor that. This is a self-inquiry technique of negation which negates all things that you are not. Finally what remains, is what-you-are. Not as the one who knows, not as the one who doesn't know. But as the one who neither knows nor does not know - tabula rasa, existing in its original, pristine state which Karl describes as "blankety blank".