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Data Quote by Peter Medawar

“In all sensation we pick and choose, interpret, seek and impose order, and devise and test hypotheses about what we witness. Sense data are taken, not merely given: we learn to perceive… The teacher has forgotten, and the student himself will soon forget, that what he sees conveys no information…” quote by Peter Medawar
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“In all sensation we pick and choose, interpret, seek and impose order, and devise and test hypotheses about what we witness. Sense data are taken, not merely given: we learn to perceive… The teacher has forgotten, and the student himself will soon forget, that what he sees conveys no information until he knows beforehand the kind of thing he is expected to see.”

Peter Medawar

About This Quote

Source Book: The Art of the Possible by Peter Medawar, 1979

We actively construct perception by selecting, interpreting, and hypothesizing about sensory input, rather than passively receiving it.

In simple terms: Perception is an active, hypothesis‑driven process.

Key Takeaway

Question your assumptions before interpreting data.

Themes

cognition perception learning

Mood

curious analytical

Type

philosophical educational

When to use this quote

  • education
  • scientific research
  • every‑making
  • personal development

Key Concepts

constructivism epistemology brain science

Questions to Reflect On

  • How do your expectations shape what you notice?
  • What methods can reduce perceptual bias?
A Different Perspective

Our brains can misinterpret ambiguous data, leading to bias.

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