It is in this connection that what I have called the economic calculus proper helps us, at least by analogy, to see how this problem can be solved, and in fact is being solved, by the price system. Even the single controlling mind, in possession of all the data for some small, self- contained economic system, would not-every time some small adjustment in the allocation of resources had to be made-go explicitly through all the relations between ends and means which might possibly be affected.