The fact that one good is substitutable for another has immediate economic consequences : insofar as one good can be substituted for another , the demands for the two kinds of good will be interrelated by the fact that customers can trade off one good for the other if it becomes advantageous to do so .
The fact that one good is substitutable for another has immediate economic consequences : insofar as one good can be substituted for another , the demand for the two kinds of good will be bound together by the fact that customers can trade off one good for the other if they get an advantage by to do so .