Replying to @mmatthiesen and @AureliePols, @gchampeau, @jason_kint, @jayrosen_nyu, @BrusselsGeek, @johnnyryan, @SophieintVeld, @IABEurope, @ddalton40, @ErnstCornelia, @MichalBoni, @Fontana3Lorenzo, @JanAlbrecht, @EU_EDPS, @why0hy, @BirgitSippelMEP
Between control preferences (publisher or CMP) and what actually happens. That it can work is obvious; that there is an empirical test for it is what makes it a standard. Otherwise it's just a theory!