Goal of science

The eventual goal of science is provide a single theory that describes the whole universe.However the approach most scientists actually follow is to seperate the problem in to two parts.First there are the laws athat tell us how the universe changes with time.Second there is the question of the intial state of the universe.Some people feel that science should be concerned with only the first part;they regard the question of the intial situation as a matter for metaphysics of religions.