A recent podcast episode by the excellent historians of the JFK assassination, Gerald Posner and Fred Litwin, prompted this podcast episode of mine. Given the need to speculate about so much that is important about the behavior of Oswald on November 21 (pre-assassination) and November 33 (post-assassination), is it possible to employ speculation as a technique for getting at the truth of why Oswald assassinated JFK, and what his post-assassination purposes might have been?  Can informed speculation ever rise to the level of good evidence?  And if so, what are the standards that such evidence must meet to achieve this state? Questions, questions, questions. I hope that Messers. Posner and/or Litwin respond to these questions, which are expanded upon in this episode of Audibly Speaking.