Skip to content

Incidentally, when we're faced with a "prove or disprove,"…

“Incidentally, when we're faced with a "prove or disprove," we're usually better off trying first to disprove with a counterexample, for two reasons: A disproof is potentially easier (we need just one counterexample); and nitpicking arouses our creative juices. Even if the given assertion is true…” quote by Ronald Graham
Download Open image
“Incidentally, when we're faced with a "prove or disprove," we're usually better off trying first to disprove with a counterexample, for two reasons: A disproof is potentially easier (we need just one counterexample); and nitpicking arouses our creative juices. Even if the given assertion is true, our search for a counterexample often leads to a proof, as soon as we see why a counterexample is impossible. Besides, it's healthy to be skeptical.”

Ronald Graham

About This Quote

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

Using counterexamples first can simplify proof attempts and spark creative thinking, even leading to proofs when none exist.

In simple terms: Start with a counterexample to test claims.

Key Takeaway

Try disproving before proving.

Themes

logic problem solving creativity

Mood

analytical curious

Type

educational motivational

When to use this quote

  • math class
  • research
  • software debugging
  • legal analysis

Key Concepts

counterexample proof strategy skepticism

Questions to Reflect On

  • When does a counterexample become a proof?
  • How can skepticism improve problem solving?
A Different Perspective

Counterexamples may not exist for true statements, leading to dead ends.

★ ★ ★ ★ ★ No ratings yet

More by Ronald Graham

Explore all 14 Ronald Graham quotes

More Assertion quotes

Browse all 279 Assertion quotes