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You can't trust code that you did not totally create…

“You can't trust code that you did not totally create yourself.” quote by Ken Thompson
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“You can't trust code that you did not totally create yourself.”

Ken Thompson

About This Quote

This interpretation was drafted with AI assistance. It is one reading of the quote, not the author's own explanation.

Only code you fully understand and control can be trusted; reliance on others' code invites risk.

In simple terms: Trust only code you fully understand.

Key Takeaway

Write and review your own code.

Themes

trust software control security

Mood

pragmatic cautious

Type

technical professional

When to use this quote

  • open‑source contributions
  • team projects
  • critical systems

Key Concepts

software engineering risk management ownership

Questions to Reflect On

  • How do you verify third‑party code?
  • When is it okay to rely on others' code?
A Different Perspective

Collaboration can improve code quality despite trust concerns.

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