Moral frame of reference determines the direction in exploration of values, but you can't explicitly know this direction, even if you know its definition, because otherwise you'd already be there. It's like with definition of action in ambient control. When definition is changed, you have no reason to expect that the defined thing remains the same, even though at that very moment your state of knowledge about the previous definition might happen to coincide with your state of knowledge about the new definition. And then the states of knowledge go their different ways.