Developing the Davis-Putnam algorithm for the Boolean satisfiability problem provided a pivotal contribution to computer science, bridging the gap between logic and computational practice. Throughout his career, this American scholar scrutinized his own intellectual evolution, consistently abandoning established theories when rigorous analysis revealed structural flaws in his previous metaphysical or epistemological positions.
Academic Formation and Early Research
Born in Chicago in 1926, Putnam moved through several institutional environments during his education. He attended Central High School before completing his studies at the University of Pennsylvania, Harvard University, and the University of California, Los Angeles, where he earned his Ph.D. in 1951. His early career involved significant contributions to mathematics, specifically assisting in the demonstration of the unsolvability of Hilbert's tenth problem.
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Take the IQ test →Contributions to Philosophy of Mind and Language
In the realm of mind-body problems, Putnam challenged type-identity theories by proposing the concept of multiple realizability. He is credited with originating the computational theory of mind and developing functionalism. His work in the philosophy of language led to the formulation of semantic externalism, famously illustrated through his Twin Earth thought experiment, which explored the causal theory of reference.
Evolution of Metaphysical Realism
Putnam began his career as an advocate for metaphysical realism but later critiqued the position extensively. He briefly adopted a stance known as internal realism before distancing himself from it. Despite these shifts, he maintained a lifelong commitment to scientific realism, asserting that mature scientific theories offer approximately accurate descriptions of the objective world.
Political Engagement and Later Interests
During the late 1960s and early 1970s, Putnam engaged in political activism, notably as a member of the Progressive Labor Party. He later characterized this affiliation as a mistake. In his final decades, he focused on American pragmatism, ethics, and Jewish philosophy. He served as a university teacher at Northwestern, Princeton, MIT, and Harvard, ultimately retiring as a highly decorated figure in the field.
Fast facts
- Born: 1926, Chicago
- Died: 2016, Arlington
- Notable work: Reason, Truth and History
- Education: Harvard University, University of Pennsylvania
- Awards: Rolf Schock Prize in Logic and Philosophy (2011)
- Awards: Lauener Prize (2012)
- Religion: Judaism
- Professional focus: Philosophy of mind, language, and mathematics
Questions readers ask
Why is Hilary Putnam associated with multiple philosophical positions?
He frequently subjected his own theories to rigorous analysis and abandoned them if he identified flaws, effectively acting as his own primary philosophical adversary.
What is the Davis-Putnam algorithm?
It is a mathematical method developed to solve the Boolean satisfiability problem, representing his contribution to computer science.
Achievements
- Affiliated with Princeton University, Harvard University and Massachusetts Institute of Technology
- Educated at Harvard University, University of Pennsylvania and University of California, Los Angeles
- Worked as mathematician, philosopher and university teacher
