<prompt> Translate the following text to EnglishKwa maana fulani, kuokoa zaidi kunazalisha keki kubwa, lakini watunga sera bado watakabiliwa na chaguo gumu la jinsi ya kugawanya keki kati ya wastaafu na wafanyakazi.  <response>: In a sense, saving more yields a bigger pie, but policymakers will still face the difficult choice of how to divide the pie between retirees and workers. 