"The XDI address of the common root node is the empty address. Thus any XDI statement that does not begin with a peer root address or an inner root address is by definition relative to the common root node."

Q1: does this imply that such statement (per 2nd sentence) has an empty address?

Q2: as I read this, I wondered how the 2nd sentence doesn't contradict the 100% addressability goal (for the object node)?