<prompt> Translate the following text to EnglishMwakilishi wa Cummins alisema kwamba kutotumia prototypes inakuwa suala la kulipa mimi sasa au kulipa mimi baadaye, ikimaanisha kwamba ni gharama nafuu sana kuonyesha muundo wa bidhaa mapema katika maendeleo na prototypes, dhana, na uchambuzi kuliko kubeba gharama ya mabadiliko makubwa ya muundo baada ya bidhaa imeingia uzalishaji.  <response>: A Cummins representative stated that not using prototypes becomes a matter of pay me now or pay me later, meaning that it is far less costly to demonstrate a products design early in development with prototypes, concepts, and analyses than to incur the cost of significant design changes after a product has entered production-a much more costly environment to make changes. 