input: Simon was a pioneer in the field of artificial intelligence, creating with Allen Newell the Logic Theory Machine (1956) and the General Problem Solver (GPS) (1957) programs. GPS may possibly be the first method developed for separating problem solving strategy from information about particular problems. Both programs were developed using the Information Processing Language (IPL) (1956) developed by Newell, Cliff Shaw, and Simon. Donald Knuth mentions the development of list processing in IPL, with the linked list originally called "NSS memory" for its inventors. In 1957, Simon predicted that computer chess would surpass human chess abilities within "ten years" when, in reality, that transition took about forty years. In the early 1960s psychologist Ulric Neisser asserted that while machines are capable of replicating "cold cognition" behaviors such as reasoning, planning, perceiving, and deciding, they would never be able to replicate "hot cognition" behaviors such as pain, pleasure, desire, and other emotions. Simon responded to Neisser's views in 1963 by writing a paper on emotional cognition, which he updated in 1967 and published in Psychological Review. Simon's work on emotional cognition was largely ignored by the artificial intelligence research community for several years, but subsequent work on emotions by Sloman and Picard helped refocus attention on Simon's paper and eventually, made it highly influential on the topic. Simon also collaborated with James G. March on several works in organization theory. With Allen Newell, Simon developed a theory for the simulation of human problem solving behavior using production rules. The study of human problem solving required new kinds of human measurements and, with Anders Ericsson, Simon developed the experimental technique of verbal protocol analysis. Simon was interested in the role of knowledge in expertise. He said that to become an expert on a topic required about ten years of experience and he and colleagues estimated that expertise was the result of learning roughly 50,000 chunks of information. A chess expert was said to have learned about 50,000 chunks or chess position patterns. He was awarded the ACM Turing Award, along with Allen Newell, in 1975. "In joint scientific efforts extending over twenty years, initially in collaboration with J. C. (Cliff) Shaw at the RAND Corporation, and subsequentially [sic] with numerous faculty and student colleagues at Carnegie Mellon University, they have made basic contributions to artificial intelligence, the psychology of human cognition, and list processing."

Answer this question "Were these programs used by others later on?"
output: Donald Knuth mentions the development of list processing in IPL, with the linked list originally called "NSS memory" for its inventors. In 1957, Simon predicted

Question: Brad Rogers Carson (born March 11, 1967) is an American lawyer and politician from the state of Oklahoma who served as the Acting Under Secretary of Defense for Personnel and Readiness from 2015-16. In that role, he initiated a number of notable reforms to include opening up all combat positions to women, open service by transgender service members, and new recruiting and retention practices. A member of the Democratic Party, he served in the United States House of Representatives from 2001-05. He served as Undersecretary of the Army from 2014-15 and as General Counsel of the Army from 2012-2014.

After the 2004 Senate election, Carson's term in the United States Congress expired on January 3, 2005; Carson was succeeded by Dan Boren. Carson indicated that he had no immediate plans to seek political office, and, in January 2005, he accepted a semester-long teaching fellowship specializing in U.S. politics at Harvard University. Upon leaving Harvard, he returned to his hometown of Claremore, Oklahoma, and worked as Chief Executive Officer of Cherokee Nation Businesses, which is owned by the Cherokee Nation of Oklahoma in Catoosa, Oklahoma. As an expert in Indian law, Carson oversaw one of the largest businesses in the state, with thousands of employees, hundreds of millions of dollars in revenue, and more than a dozen in-house lawyers who specialized in Indian and corporate law. In December 2008, Carson left his post at Cherokee Nation Businesses to deploy to Iraq as an Intelligence Officer in the U.S. Navy. He was officer-in-charge of weapons intelligence teams embedded with the U.S. Army's 84th Explosive Ordnance Disposal Battalion in the nine southern provinces of Iraq; the teams worked with EOD teams at seven bases and investigated bomb sites, caches, smuggling routes, and other activities related to improvised explosive devices. For this work, Carson received, among other awards, the Bronze Star. On his return, he was elected to the board of Cherokee Nation Businesses. In January 2010, Carson assumed a position as professor of business and law and at the University of Tulsa and as director of the National Energy Policy Institute, a non-profit energy policy organization funded by billionaire George Kaiser's family foundation. In his academic work, Carson has written extensively about the economics of renewable energy. He has also contributed journalism to The Weekly Standard, The New Republic, Blueprint, and Democracy: A Journal of Ideas. In 2010, Carson contributed to a symposium issue of Democracy: A Journal of Ideas, in which he was one of ten writers (including Martha Nussbaum, Michael Sandel, and others) discussing the future of progressive political thought and politics. He is the author of several other works, including a guide to federal appellate practice, a work co-authored with Judge Robert Bacharach (who was appointed by President Obama to the 10th Circuit Court of Appeals). More recently, he has been working on a long series of articles about military reform for the online journal War on the Rocks. Carson had met Barack Obama in 2004 when they were both nominees of the Democratic Party for open seats in the United States Senate. Carson endorsed Obama in 2006 for the 2008 presidential election. Carson served as Obama's personal representative in the approval of candidates for delegates from Oklahoma to the 2008 Democratic National Convention. Oklahoma was the first state to name its complete delegation to the 2008 Democratic Convention. Carson's wife, Julie, served on the Oklahoma State Regents for Higher Education. They live in Claremore, Oklahoma. They have one son, Jack.

Using a quote from the above article, answer the following question: What did he do after he left Congress?
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Answer:
he accepted a semester-long teaching fellowship specializing in U.S. politics at Harvard University.