I don't get the blank slate thing, either. I think I know enough about my therapist to see her as a person, I don't believe I've cast her in any role. Works for me. Maybe it depends on the model of therapy the T prefers to use, or maybe it depends on the client, but for me, I would rather think that my T is an authentic representation of herself than someone I've created! Like my sense of reality isn't messed up enough?!