OI: We are pretty much aware of what is happening with us, and around us.
NI: We all operate in some or other blindness. The unconscious performance of the body, or our habitual actions, or the way we see the world are great examples of what is transparent to us.
What is transparent to us does not mean it is not happening. It is happening and yet is transparent to us. We are not aware of it. We do not have our attention on it.
Every person and every tradition have their own awareness and blindness, where they put attention and where they do not.