At the same time, can't we introduce voluntary features that would permit a citizen who can do better on his own to be excused upon presentation of evidence that he had made provision for the non-earning years?

与此同时，我们可不可以推出一些自愿的条款，允许" 自己能做的更好" 的公民不加入政府计划，只要他能证明自己为退休时候做好了准备？