An e-mail apparently from Dr Mann refers to an aspect of some statistical testing he did not want discussed widely as “dirty laundry”.

一封明显来自马恩博士的邮件提到，他认为在某些数据测试的方面属于“肮脏的洗衣房”而不想广泛的讨论。

youdao

That is because quick and dirty techniques for testing primality already exist.

ECONOMIST: Number theory