Background: Roberto Mangabeira Unger (; born 24 March 1947) is a philosopher and politician. He has developed his views and positions across many fields, including social, political, and economic theory. In legal theory, he is best known by his work in the 1970s and 80s while at Harvard Law School as part of the Critical Legal Studies movement, which is held to have helped disrupt the methodological consensus in American law schools. His political activity helped the transition to democracy in Brazil in the aftermath of the military regime, and culminated with his appointment as Brazil's Minister of Strategic Affairs in 2007 and again in 2015.
Context: The beginning of Unger's academic career began with the books Knowledge and Politics and Law in Modern Society, published in 1975 and 1976 respectively. These works led to the co-founding of Critical Legal Studies (CLS) with Duncan Kennedy and Morton Horwitz. The movement stirred up controversy in legal schools across America as it challenged standard legal scholarship and made radical proposals for legal education. By the early 1980s, the CLS movement touched off a heated internal debate at Harvard, pitting the CLS scholars against the older, more traditional scholars.  Throughout much of the 1980s, Unger worked on his magnum opus, Politics: A Work In Constructive Social Theory, a three volume work that assessed classical social theory and developed a political, social, and economic alternative. The series is based on the premise of society as an artifact, and rejects the necessity of certain institutional arrangements. Published in 1987, Politics was foremost a critique of contemporary social theory and politics; it developed a theory of structural and ideological change, and gave an alternative account of world history. By first attacking the idea that there is a necessary progression from one set of institutional arrangements to another, e.g. feudalism to capitalism, it then built an anti-necessitarian theory of social change, theorizing the transition from one set of institutional arrangements to another.  Unger devoted much of the following decades to further elaborating on the insights developed in Politics by working out the political and social alternatives. What Should Legal Analysis Become? (Verso, 1996) developed tools to reimagine the organization of social life. Democracy Realized: The Progressive Alternative (Verso, 1998) and What Should the Left Propose? (Verso, 2005) put forth alternative institutional proposals.
Question: When did Roberto's academic career begin?
Answer: The beginning of Unger's academic career began with the books Knowledge and Politics and Law in Modern Society,

Background: David Michael Letterman (born April 12, 1947) is an American television host, comedian, writer, and producer. He hosted a late night television talk show for 33 years, beginning with the February 1, 1982, debut of Late Night with David Letterman on NBC, and ending with the May 20, 2015, broadcast of Late Show with David Letterman on CBS. In total, Letterman hosted 6,028 episodes of Late Night and Late Show, surpassing friend and mentor Johnny Carson as the longest-serving late night talk show host in American television history. In 1996 Letterman was ranked 45th on TV Guide's 50 Greatest TV Stars of All Time.
Context: In 1975, encouraged by his then-wife Michelle and several of his Sigma Chi fraternity brothers, Letterman moved to Los Angeles, with hope of becoming a comedy writer. He and Michelle packed their belongings in his pickup truck and headed west. As of 2012, he still owned the truck. In Los Angeles, he began performing comedy at The Comedy Store. Jimmie Walker saw him on stage; with an endorsement from George Miller, Letterman joined a group of comedians whom Walker hired to write jokes for his stand-up act, a group that at various times would also include Jay Leno, Paul Mooney, Robert Schimmel, Richard Jeni, Louie Anderson, Elayne Boosler, Byron Allen, Jack Handey, and Steve Oedekerk.  By the summer of 1977, Letterman was a writer and regular on the six-week summer series The Starland Vocal Band Show, broadcast on CBS. He hosted a 1977 pilot for a game show entitled The Riddlers (that was never picked up), and co-starred in the Barry Levinson-produced comedy special Peeping Times that aired in January 1978. Later that year, Letterman was a cast member on Mary Tyler Moore's variety show, Mary. Letterman made a guest appearance on Mork & Mindy (as a parody of EST leader Werner Erhard) and appearances on game shows such as The $20,000 Pyramid, The Gong Show, Hollywood Squares, Password Plus and Liar's Club, as well as the Canadian cooking show Celebrity Cooks (November 1977), talk shows such as 90 Minutes Live (February 24 and April 14, 1978), and The Mike Douglas Show (April 3, 1979 and February 7, 1980). He was also screen tested for the lead role in the 1980 film Airplane!, a role that eventually went to Robert Hays.  His dry, sarcastic humor caught the attention of scouts for The Tonight Show Starring Johnny Carson, and Letterman was soon a regular guest on the show. Letterman became a favorite of Carson and was a regular guest host for the show beginning in 1978. Letterman credits Carson as the person who influenced his career the most.
Question: Does he credit anyone else?
Answer: include Jay Leno, Paul Mooney, Robert Schimmel, Richard Jeni, Louie Anderson, Elayne Boosler, Byron Allen, Jack Handey, and Steve Oedekerk.

Background: Rubber Soul is the sixth studio album by the English rock band the Beatles. It was released on 3 December 1965 in the United Kingdom, on EMI's Parlophone label, accompanied by the non-album double A-side single "Day Tripper" / "We Can Work It Out". The original North American version of the album was altered by Capitol Records to include a different selection of tracks.
Context: Rubber Soul was issued on EMI's Parlophone label on 3 December 1965. The "Day Tripper"/"We Can Work It Out" single was also released that day, as the band's first double A-side single. EMI announced that it had pressed 750,000 copies of the LP to cater to local demand. Its advance orders of 500,000 almost equalled the total sales for the new single and were announced by the Daily Mirror's show business reporter as marking a new record for pre-release orders for an LP. In the United States, Rubber Soul was the group's tenth album and their first to consist entirely of original songs. The release took place there on 6 December.  On the day of the album's release, the Beatles performed at the Odeon Cinema in Glasgow, marking the start of what would be their final UK tour. In addition to the two songs from the new single, the group played the Rubber Soul tracks "If I Needed Someone" and "Nowhere Man" throughout the tour. Exhausted from five years of almost non-stop touring, recording and film work, the band members subsequently took a three-month break during the first part of 1966, using this time to explore new directions that would inform their subsequent work, beginning with the album Revolver.  Rubber Soul was commercially successful, beginning a 42-week run on the UK albums chart on 12 December 1965. The following week it replaced the Sound of Music soundtrack at the top of the chart, where it remained for eight weeks in total. On the national chart compiled by Melody Maker, Rubber Soul entered at number 1 and held the position for thirteen weeks; it remained in the top ten until mid July 1966.  In the United States, Rubber Soul topped the Billboard Top LP's chart on 8 January 1966, having sold 1.2 million copies there within nine days of release. These initial sales were unprecedented for an LP and were cited by Billboard magazine as evidence of a new market trend in the US, whereby pop albums started to match the numbers of singles sold. The album was number 1 for six weeks in total; it remained in the top twenty until the start of July, before leaving the top-200 listings in mid December.  In America, Rubber Soul sold 1,800,376 copies by the end of 1965 and 2,766,862 by the close of the decade. As of 1997, it had shipped over 6 million copies there. In 2013, after the British Phonographic Industry altered its sales award protocol, the album was certified Platinum based on UK sales since 1994.
Question: how many copies were sold
Answer:
having sold 1.2 million copies there