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Mark Twain said a century ago, “It’s not what you don’t…

“Mark Twain said a century ago, “It’s not what you don’t know that gets you into trouble, it’s what you know for sure that ain’t so.” quote by Tom Kelley
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““Mark Twain said a century ago, “It’s not what you don’t know that gets you into trouble, it’s what you know for sure that ain’t so.””

Tom Kelley

About This Quote

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

Highlights that overconfidence in known facts leads to errors, urging humility and curiosity.

In simple terms: Overconfidence can mislead.

Key Takeaway

Question assumptions and stay curious.

Themes

humility learning critical thinking

Mood

thoughtful inquisitive

Type

philosophical advice

When to use this quote

  • product development
  • education
  • decision making

Key Concepts

cognitive bias innovation knowledge management

Questions to Reflect On

  • How can you test what you think you know?
  • When did overconfidence cause a mistake?
A Different Perspective

May overlook the value of expertise.

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