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Accuracy Quote by Donald Knuth

“...One of the most important lessons, perhaps, is the fact that SOFTWARE IS HARD. From now on I shall have significantly greater respect for every successful software tool that I encounter. During the past decade I was surprised to learn that the writing of programs for TeX and Metafont proved to…” quote by Donald Knuth
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“...One of the most important lessons, perhaps, is the fact that SOFTWARE IS HARD. From now on I shall have significantly greater respect for every successful software tool that I encounter. During the past decade I was surprised to learn that the writing of programs for TeX and Metafont proved to be much more difficult than all the other things I had done (like proving theorems or writing books). The creation of good software demand a significiantly higher standard of accuracy than those other things do, and it requires a longer attention span than other intellectual tasks.”

Donald Knuth

About This Quote

Source Speech: Computer Science Hall of Fame Acceptance, 1995

Software development demands far more precision and sustained focus than many other intellectual pursuits, making it inherently difficult.

In simple terms: Software is hard and needs high accuracy and focus.

Key Takeaway

Respect and rigor in software creation.

Themes

software development precision focus intellectual challenge

Mood

respectful reflective serious

Type

advice philosophical

When to use this quote

  • building complex applications
  • debugging large codebases
  • maintaining legacy systems
  • educational curricula for programming

Key Concepts

cognitive load error tolerance attention span

Questions to Reflect On

  • How do you balance precision with practicality?
  • What strategies improve sustained attention in coding?
A Different Perspective

Even with respect, not all software can achieve perfect accuracy; trade‑offs are inevitable.

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