There is a plane of divine consciousness in which all is known absolutely, and the whole plan of things foreseen and predetermined. That way of seeing lives in the highest reaches of the Supramental; it is the Supreme’s own vision. But when we do not possess that consciousness, it is useless to speak in terms that hold good only in that region and are not our present effective way of seeing things. For at a lower level of consciousness nothing is realised or fixed beforehand; all is in the process of making. Here there are no settled facts, there is only the play of possibilities; out of the clash of possibilities is realised the thing that has to happen. On this plane we can choose and select; we can refuse one possibility and accept another; we can follow one path, turn away from another. And that we can do, even though what is actually happening may have been foreseen and predetermined in a higher plane.
The Supreme Consciousness knows everything beforehand, because everything is realised there in her eternity. But for the sake of her play and in order to carry out actually on the physical plane what is foreordained in her own supreme self, she moves here upon earth as if she did not know the whole story; she works as if it was a new and untried thread that she was weaving. It is this apparent forgetfulness of her own foreknowledge in the higher consciousness that gives to the individual in the active life of the world his sense of freedom and independence and initiative. These things in him are her pragmatic tools or devices, and it is through this machinery that the movements and issues planned and foreseen elsewhere are realised here.
It may help you to understand if you take the example of an actor. An actor knows the whole part he has to play; he has in his mind the exact sequence of what is to happen on the stage. But when he is on the stage, he has to appear as if he did not know anything; he has to feel and act as if he were experiencing all these things for the first time, as if it was an entirely new world with all its chance events and surprises that was unrolling before his eyes.
[The Mother: CWM 3]