Background: "Cross Road Blues" (also known as "Crossroads") is a blues song written and recorded by American blues artist Robert Johnson in 1936. Johnson performed it as a solo piece with his vocal and acoustic slide guitar in the Delta blues-style. The song has become part of the Robert Johnson mythology as referring to the place where he supposedly sold his soul to the Devil in exchange for his musical talents, although the lyrics do not contain any specific references. Bluesman Elmore James revived the song with recordings in 1954 and 1960-1961.
Context: Little is known about Johnson's life and musical career, although his recordings are well documented. In October 1936, Johnson auditioned for music store owner and sometime talent scout H. C. Speir in Jackson, Mississippi; Speir passed on Johnson's contact information to Ernie Oertle, who was a representative for ARC Records. After a second audition, Oertle arranged for Johnson to travel to San Antonio, Texas, for a recording session. Johnson recorded 22 songs for ARC over three days from November 23 to 27, 1936. During the first session, he recorded his most commercially appealing songs. They mostly represented his original pieces and reflected current, piano-influenced musical trends. The songs include "Terraplane Blues" (his first single and most popular record) along with "Sweet Home Chicago" and "I Believe I'll Dust My Broom", which became blues standards after others recorded them.  A second and third recording date took place in San Antonio after a two-day break. Johnson reached back into his long-standing repertoire for songs to record. The material reflects the styles of country blues performers Charley Patton and Son House, who influenced Johnson in his youth. The songs are among Johnson's most heartfelt and forceful, and music historian Ted Gioia sees a shift in the lyrical themes:  At the close of the San Antonio session, the darker, more apocalyptic side of Johnson's work emerges ... [he] evokes the themes of damnation and redemption, darkness and light ... glimpses into the musician's inner life, and all its attendant turmoils.  "Cross Road Blues" was recorded during Johnson's third session in San Antonio, on Friday November 27, 1936. The sessions continued at an improvised studio in Room 414 at the Gunter Hotel. ARC producers Art Satherley and Don Law supervised the recording and used a portable disc cutting machine. It is unknown what input, if any, they had into Johnson's selection of material to record or how to present it. Two similar takes of the song were recorded.
Question: What was the last one he recorded?
Answer: Cross Road Blues" was recorded during Johnson's third session in San Antonio, on Friday November 27, 1936.

Problem: Background: Steven David "Steve" Levitt (born May 29, 1967) is an American economist known for his work in the field of crime, in particular on the link between legalized abortion and crime rates. Winner of the 2003 John Bates Clark Medal, he is currently the William B. Ogden Distinguished Service Professor of Economics at the University of Chicago, director of the Becker Center on Chicago Price Theory at the University of Chicago Booth School of Business. He was co-editor of the Journal of Political Economy published by the University of Chicago Press until December 2007. With journalist Stephen J. Dubner, he co-authored the best-selling book Freakonomics (2005) and its sequels SuperFreakonomics (2009)
Context: On April 10, 2006, John Lott filed suit for defamation against Steven Levitt and HarperCollins Publishers over the book Freakonomics and against Levitt over a series of emails to retired economist John B. McCall. In the book Freakonomics, Levitt and coauthor Stephen J. Dubner claimed that the results of Lott's research in More Guns, Less Crime had not been replicated by other academics. In the emails to McCall, who had pointed to a number of papers in different academic publications that had replicated Lott's work, Levitt wrote that the work by authors supporting Lott in a special 2001 issue of the Journal of Law and Economics had not been peer reviewed, alleged that Lott had paid the University of Chicago Press to publish the papers, and that papers with results opposite of Lott's had been blocked from publication in that issue.  A federal judge found that Levitt's replication claim in Freakonomics was not defamation but found merit in Lott's complaint over the email claims.  Levitt settled the second defamation claim by admitting in a letter to John B. McCall that he himself was a peer reviewer in the 2001 issue of the Journal of Law and Economics, that Lott had not engaged in bribery (paying for extra costs of printing and postage for a conference issue is customary), and that he knew that "scholars with varying opinions" (including Levitt himself) had been invited to participate. The Chronicle of Higher Education characterized Levitt's letter as offering "a doozy of a concession."  The dismissal of the first half of Lott's suit was unanimously upheld by The United States Court of Appeals for the Seventh Circuit on February 11, 2009.
Question: Was that true?
Answer:
In the emails to McCall, who had pointed to a number of papers in different academic publications that had replicated Lott's work,