需要访问谁？不需要访问谁？回应率是多少。
Who should have been interviewed and was not? Or do response rates matter?
当短信和广告来第一次开始向手机，回应率是惊人的。
When text messaging and ads first started coming to cell phones, the response rate was stupendous.
然而，一旦你的数学才能做出回应率微乎其微，甚至此一巨富很快。
However, once you do the math even this miniscule response rate can make one very wealthy very quickly.
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