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Toulmin : Pulling out the Warrants. from Patricia Cornwell’s Portrait of a Killer: Jack the Ripper -- Case Closed. Cornwell’s central claim is that Jack the Ripper was really Walter Richard Sickert, a relatively well-known English painter of the late 19th Century.
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Toulmin: Pulling out the Warrants from Patricia Cornwell’s Portrait of a Killer: Jack the Ripper -- Case Closed
Cornwell’s central claim is that Jack the Ripper was really Walter Richard Sickert, a relatively well-known English painter of the late 19th Century.
Conclusion: Sickert was Jack the Ripper. • DATUM: One of the letters that purported to be from Jack the Ripper was written on the same, relatively rare, brand of stationery as a letter from Sickert. WARRANT?
Conclusion: Sickert was Jack the Ripper. • DATA: Sickert had an operation as a child that left him unable to have a normal sex life. We know today that many serial killers are impotent. • WARRANT?
Conclusion: Sickert was Jack the Ripper. • DATA: Sickert painted a picture in 1908 called "Jack the Ripper’s Bedroom," described by an art historian as being "very dark and disturbing." Sickert often painted scenes of violence against women. • AND?