Blank slate widens the power differential. They know everything about you and they could be a door knob for all it matters to you. Blank slate was a Freudian thing. Human beings, as has been learned in treatment over the past 100 years, need human contact. We need some level of emotional relating. You can't bond with a door knob. You don't need to know the names of their wife and children but you do need to know that what you say matters. Blank slate will never give that.