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Accounts Quote by John von Neumann

“The sciences do not try to explain, they hardly even try to interpret, they mainly make models. By a model is meant a mathematical construct which, with the addition of certain verbal interpretations, describes observed phenomena. The justification of such a mathematical construct is solely and…” quote by John von Neumann
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“The sciences do not try to explain, they hardly even try to interpret, they mainly make models. By a model is meant a mathematical construct which, with the addition of certain verbal interpretations, describes observed phenomena. The justification of such a mathematical construct is solely and precisely that it is expected to work-that is, correctly to describe phenomena from a reasonably wide area.”

John von Neumann

About This Quote

Source Book: Theory of Self-Reproducing Automata, 1966

Science builds abstract mathematical models to predict phenomena rather than fully explain them.

In simple terms: Models predict, not explain.

Key Takeaway

Use models, test predictions.

Themes

science modeling prediction philosophy

Mood

analytical critical

Type

philosophical technical

When to use this quote

  • research design
  • policy analysis
  • engineering
  • economics
  • climate modeling

Key Concepts

mathematics epistemology abstraction

Questions to Reflect On

  • How do you validate a model’s assumptions?
  • When should you trust a model’s predictions?
A Different Perspective

Models may oversimplify reality, leading to misinterpretation.

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