roller coaster, he said: Truzzi died from cancer on February 2, 2003. Pseudoskepticism Marcello Truzzi popularized the term pseudoskepticism in response to skeptics who, in his opinion, made negative claims without bearing the burden of proof of those claims. While a Professor of Sociology at Eastern Michigan University in 1987, Truzzi discussed pseudoskepticism in the journal Zetetic Scholar which he had founded: In 1994 Susan Blackmore, a parapsychologist who became more skeptical and eventually became a CSICOP fellow in 1991, described what she termed the "worst kind of pseudoskepticism": "Extraordinary claims" Truzzi's remark is derived from the 18th century French mathematician Pierre-Simon de Laplace's "" (the more extraordinary a fact is, the more it needs to be supported by strong evidence). Carl Sagan later popularized Truzzi's adaptation of Laplace as "Extraordinary claims require extraordinary evidence", which came to be known as the Sagan standard. Martin Gardner – Truzzi correspondence In 2017, World Scientific released a book edited by Dana Richards about the correspondence between Martin Gardner and Truzzi. The book called Dear Martin, Dear Marcello: Gardner and Truzzi on Skepticism is broken up into four sections; "The Road to CSICOP", "The Demarcation Problem", "The Dissolution", and the "Return to Cordiality". The early letters from Truzzi were not preserved and the beginning of the book seems one-sided with only Gardner's letters. The editor, Richards states in the introduction the conflicts between the two men, their differing goals for CSICOP, and various people in the skeptic and paranormal communities. They discuss many topics including publishers, Geller, and the "definitions of charlatan and crankpot". Books by Truzzi , 236 pages. Ten essays on methods of abductive inference in Poe's Dupin, Doyle's Holmes, Peirce and many others. See also Encyclopedia of Pseudoscience (2002). Sextus Empiricus Charles Fort Thomas Kuhn Michael Polanyi Strong programme Science wars Modern flat Earth beliefs ("Zetetic astronomy") References Further reading Obituaries Carroll, Robert Todd. "In Memoriam" Coleman, Loren. "Marcello Truzzi, 67, Always Curious, Dies". 2003. Kurtz, Paul. "Skeptical gadfly Marcello Truzzi – 1935–2003", Skeptical Inquirer, News and Comment – Obituary. May–June, 2003. Mathis, Jo Collins. "Expert on the Paranormal Dies: Longtime EMU Sociology Professor Marcello Truzzi Explored 'Things That Go Bump in the Night'". Ann Arbor News, February 9, 2003. Oliver, Myrna – "Professor Studied the Far-Out From Witchcraft to Psychic Powers". Los Angeles Times, February 11, 2003, Home Edition, p. B.11. Smith, Paul H. – "Marcello Truzzi: In Memoriam"