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Data Quote by Arthur Conan Doyle

“It is a capital mistake to theorize before one has data.” quote by Arthur Conan Doyle
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“It is a capital mistake to theorize before one has data.”

Arthur Conan Doyle

About This Quote

Source Novel: The Lost World, 1912

Formulating theories without data leads to errors; evidence must precede speculation.

In simple terms: Data should guide conclusions, not the reverse.

Key Takeaway

Base ideas on solid evidence.

Themes

science reason methodology

Mood

analytical cautious

Type

literary educational

When to use this quote

  • research design
  • policy analysis
  • product development
  • medical diagnosis

Key Concepts

empiricism critical thinking

Questions to Reflect On

  • How do you ensure decisions are data‑driven?
  • When is intuition appropriate?
A Different Perspective

Time constraints can limit data collection.

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