<P> Any point that lies either on the production possibilities curve or to the left of it is said to be an attainable point : it can be produced with currently available resources . Points that lie to the right of the production possibilities curve are said to be unattainable because they can not be produced using currently available resources . Points that lie strictly to the left of the curve are said to be inefficient , because existing resources would allow for production of more of at least one good without sacrificing the production of any other good . An efficient point is one that lies on the production possibilities curve . At any such point , more of one good can be produced only by producing less of the other . </P>
points outside the production possibilities curve represent combinations of products that are
unattainable