Habits Quote by Daniel Kahneman
““What you learned about the Müller-Lyer illusion did not change the way you see the lines, but it changed your behavior. You now know that you cannot trust your impression of the length of lines that have fins appended to them, and you also know that in the standard Müller-Lyer display you cannot trust what you see. When asked about the length of the lines, you will report your informed belief, not the illusion that you continue to see.””
About This Quote
Source Speech: Lecture on Perception, Daniel Kahneman, 2012
Understanding an illusion alters behavior, not perception; you report informed belief rather than raw visual impression.
In simple terms: Illusion awareness changes how you respond, not what you see.
Key Takeaway
Base judgments on knowledge, not intuition.
Themes
perception
bias
decision making
awareness
Mood
reflective
analytical
Type
educational
psychological
When to use this quote
- psychology classes
- design testing
- every decision
- educational workshops
Key Concepts
Müller‑Lyer illusion
cognitive bias
metacognition
Questions to Reflect On
- How does knowledge of bias affect your choices?
- Can you trust intuition after learning its limits?
A Different Perspective
Awareness may not fully eliminate subconscious influence.
