 The economic historian Stephen Ziliak discovered in the Guinness Archives that to prevent further disclosure of confidential information, the Guinness Board of Directors allowed its scientists to publish research on condition that they do not mention "1) beer, 2) Guinness, or 3) their own surname".to Ziliak, Gosset seems to have gotten his pen name "Student" from his 1906–1907 notebook on counting yeast cells with a haemacytometer, "The Student's Science Notebook" Thus his most noteworthy achievement is now called Student's, rather than Gosset's, t-distribution and test of statistical significance.Gosset published most of his 21 academic papers, including "The probable error of a mean," in Pearson's journal "Biometrika" under the pseudonym "Student".