John McCarthy (computer scientist)
John McCarthy (computer scientist)
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John McCarthy (computer scientist)

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John McCarthy (computer scientist)

John McCarthy (September 4, 1927 – October 24, 2011) was an American computer scientist and cognitive scientist. He was one of the founders of the discipline of artificial intelligence, and part of just a small group of artificial intelligence researchers in the 1950s and 1960s. He co-authored the proposal for the Dartmouth workshop which coined the term "artificial intelligence" (AI), led the development of the symbolic programming language family Lisp and had a large influence in the language ALGOL, popularized time-sharing, and created garbage collection .

McCarthy spent most of his career at Stanford University. He received many accolades and honors, such as the 1971 Turing Award for his contributions to the topic of AI, the United States National Medal of Science, and the Kyoto Prize.

John McCarthy was born in Boston, Massachusetts, on September 4, 1927, to an Irish immigrant father and a Lithuanian Jewish immigrant mother, John Patrick and Ida (Glatt) McCarthy. The family was obliged to relocate frequently during the Great Depression, until McCarthy's father found work as an organizer for the Amalgamated Clothing Workers in Los Angeles, California. His father came from Cromane, a small fishing village in County Kerry, Ireland. His mother died in 1957.

Both parents were active members of the Communist Party during the 1930s, and they encouraged learning and critical thinking. Before he attended high school, McCarthy became interested in science by reading a translation of 100,000 Whys, a Russian popular science book for children. He was fluent in the Russian language and made friends with Russian scientists during multiple trips to the Soviet Union, but distanced himself after making visits to the Soviet Bloc, which led to him becoming a conservative Republican.

McCarthy graduated from Belmont High School two years early and was accepted into Caltech in 1944.

He showed an early aptitude for mathematics; during his teens, he taught himself college math by studying the textbooks used at the nearby California Institute of Technology (Caltech). As a result, he was able to skip the first two years of math at Caltech. He was suspended from Caltech for failure to attend physical education courses. He then served in the US Army and was readmitted, receiving a Bachelor of Science (BS) in mathematics in 1948.

It was at Caltech that he attended a lecture by John von Neumann that inspired his future endeavors.

McCarthy completed his graduate studies at Caltech before moving to Princeton University, where he received a PhD in mathematics in 1951 with his dissertation "Projection operators and partial differential equations", under the supervision of Donald C. Spencer.

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