<prompt> Translate the following text to EnglishUwepo wa lag kama hiyo ni muhimu kwa ajili ya thamani ya vifo vya mapema kwa sababu nadharia ya kiuchumi inaonyesha kwamba faida zinazotokea katika siku zijazo zinapaswa kupunguzwa.  <response>: The existence of such a lag is important for the valuation of premature mortality incidence because economic theory suggests that benefits occurring in the future should be discounted. 