Don Knuth and the Art of Computer Programming: The Interview

Abstraction: Donald Knuth on TAOCP, literate programming, TeX design decisions, and testing philosophy

Key points:

• Knuth received the Turing Award (1974), Kyoto Prize (1996), and National Medal of Science (1979); he invented literate programming and designed TeX with its accompanying font system (METAFONT).
• His approach to finding simple solutions: assume a simple solution exists before concluding it doesn't, rather than stopping at the first working answer.
• Torture-testing methodology: (1) imagine yourself as the enemy of the system, (2) use legal but bizarre inputs, (3) embed complex constructions inside even less scrutable ones.
• The only regret he expressed about TeX: using binary arithmetic internally but decimal in the user interface — he should have done all computations in decimal.
• He describes a programming language as "a tool to convert a programmer's mental images into precise operations," emphasizing matching user intuition, and advocates for multiple language paradigms.
• Writes approximately five programs per week as of the interview, still using literate programming style.

Connections: Donald Knuth · Tex · Literate Programming · Algorithm Design · Software Testing

Source: https://www.simple-talk.com/opinion/opinion-pieces/don-knuth-and-the-art-of-computer-programming-the-interview/