(A) It fail to specify the many reasons younger people have for saving money, and it fails to identify which of those reasons is the strongest. -- We do not really care about the quality of the reasons. Even if this were true, saying that the reason is not good enough does not help in pointing out an error.
(B) It assumes that a negative savings rate—the result of the average household’s spending all of its after-tax income as well as some of its existing savings—cannot ever come about in
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(B) It assumes that a negative savings rate—the result of the average household’s spending all of its after-tax income as well as some of its existing savings—cannot ever come about in
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