Errors Quote by Carl Sagan
“Our perceptions are fallible. We sometimes see what isn't there. We are prey to optical illusions. Occasionally we hallucinate. We are error-prone.”
About This Quote
Source Speech: Cosmos Episode 4, Carl Sagan, 1980
Human perception is unreliable; we often see things that aren’t there, leading to errors and hallucinations.
In simple terms: Our senses can mislead us, causing false perceptions.
Key Takeaway
Question and verify your observations.
Themes
perception
error
illusion
science
critical thinking
Mood
curious
skeptical
Type
philosophical
scientific
When to use this quote
- evaluating eyewitness testimony
- designing experiments
- media literacy
- mental health assessment
Key Concepts
cognitive bias
optical illusion
hallucination
scientific method
Questions to Reflect On
- What evidence supports your perception?
- How do you guard against illusion?
A Different Perspective
Our senses can be deceived by context and expectation.
![“[ When a religious couple wrote to Sagan about fulfilled prophecies, he wrote back in May 1996 :] If ‘fulfilled prophecy’ is your criterion, why do you not believe in materialistic science, which has an unparalleled record of fulfilled prophecy? Consider, for example, eclipses.” quote by Carl Sagan](https://sms4smile.com/quotes/img-quotes/875/carl-sagan-160_belief_when-a-religious-couple-wrote-to-sagan-a_25095.jpg)
