Bird Quote by Karl Popper
“No number of sightings of white swans can prove the theory that all swans are white. The sighting of just one black one may disprove it.”
About This Quote
Source Philosophy: "The Logic of Scientific Discovery", 1934
A single counter‑example (a black swan) can falsify a universal claim (all swans are white), illustrating the falsifiability principle in science.
In simple terms: One exception can disprove a general rule.
Key Takeaway
Seek counter‑examples to test theories.
Themes
science
logic
philosophy
methodology
critical thinking
Mood
analytical
skeptical
inquisitive
Type
philosophical
scientific
When to use this quote
- research design
- policy analysis
- education
- debate clubs
Key Concepts
falsifiability
induction
empiricism
Questions to Reflect On
- How do you test universal claims?
- What role do anomalies play in progress?
A Different Perspective
Finding counter‑examples can be difficult in complex systems.
![“[The aim of science is] to explain what so far has taken to be an explicans, such as a law of nature. The task of empirical science constantly renews itself. We may go on forever, proceeding to explanations of a higher and higher universality...” quote by Karl Popper](https://sms4smile.com/quotes/img-quotes/f4e/karl-popper-2167_aim_the-aim-of-science-is-to-explain-what-so_121944.jpg)
