<prompt> Translate the following text to EnglishMfano huo ni muhimu kwa kuchunguza athari za muda mrefu za akiba ya kitaifa na sera ya kifedha na kwa kulinganisha njia mbadala ndani ya mfumo wa kawaida wa kiuchumi.  <response>: The model is helpful for exploring the long-term implications of national saving and fiscal policy and for comparing alternative paths within a common economic framework. 