I didn't say that that the information stored must be made of... nothing. I said we don't understand how it is stored.* Besides, any storage of words is no more intrinsically linked to the Reality, insofar as there is a Reality behind the words, of what those words mean than is the vibrations in the air that we perceive when we hear those words.

*Or at least that is what I intended to say. If I didn't do a very good job of it the fault is all mine.