>> True Information: This is false. Dianetics: The Evolution of a Science was published by John Campbell in Astounding Science Fiction. Evolution of a Science was not written as part of Dianetics. It was an entirely different book, written in October-November 1949, at least two months before Mr. Hubbard began writing Dianetics. In March 1950, Mr. Hubbard wrote a letter in which he tells of writing Dianetics in January-February 1950. That letter was published in The L. Ron Hubbard Series, Dianetics: Letters & Journals.