The entrance to the Department of History’s office in Sidney Smith Hall

Making Up Minds: Computing and Proof in the Postwar United States

Start Date and Time:

Wednesday, February 6, 2019, 2:00PM

End Date and Time:

Wednesday, February 6, 2019, 4:00PM


Prof. Stephanie Dick (University Of Pennsylvania)

“Computers ought to produce in the long run some fundamental change in the nature of all mathematical activity.” These words, penned in 1958, capture the motivation behind an early field of computing research called Automated Theorem-Proving or Automated Reasoning. Practitioners of this field sought to program computers to prove mathematical theorems or to assist human users in doing so. Everyone working in the field agreed that computers had the potential to make novel contributions to the production of mathematical knowledge. They disagreed about almost everything else. Automated theorem-proving practitioners subscribed to complicated and conflicting visions of what ought to count and not count as a mathematical proof. There was also disagreement about the character of human mathematical faculties – like intuition, understanding, and reasoning – and how much the computer could be made to possess them, if at all. Different practitioners also subscribed to quite different imaginations of the computer itself, its limitations and possibilities. Automated theorem-proving practitioners built their competing visions of mathematicians, minds, computers, and proof, directly into their theorem-proving programs. Their efforts did indeed precipitate transformations in the character of mathematical activity but in varied and often surprising ways. They crafted new formal and material tools and practices for wielding them that reshaped the work of proof. They also reimagined what “reasoning” itself might be and what logics capture or prescribe it. With a focus on communities based in the United States in the second half of the twentieth century, this talk will introduce different visions of the computer as a mathematical agent, software that was crafted to animate those imaginings, and the novel practices and materialities of mathematical knowledge-making that emerged in tandem.

Stephanie Dick is a historian of science focused on the history of mathematics and computing in the twentieth century. Her first book project explores early attempts to automate proof and new formulations of mathematical reasoning and knowledge that were developed in tandem with them. She also works on the history of NYSIIS, the New York State Identification and Intelligence System, which was one of the first efforts to introduce computing to American law enforcement. She has also published about the history of Microsoft Windows, and is working on a book length study of how computer science became an academic discipline.

Coffee, tea, cookies, and sandwiches will be available.


  • Institute for the History and Philosophy of Science and Technology
  • Department of History
  • Computer Science

Contact Information

Mark Solovey

Institute for the History and Philosophy of Science and Technology


Victoria College, Room 323, 73 Queen's Park Crescent Toronto, Ontario M5S 1K7


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Hand drawn reconstruction of a computer proof in geometry, 1967.