Calculation Know Quote by John Archibald Wheeler
““Never make a calculation until you know the answer. Make an estimate before every calculation, try a simple physical argument (symmetry! invariance! conservation!) before every derivation, guess the answer to every paradox and puzzle. Courage: No one else needs to know what the guess is. Therefore make it quickly, by instinct. A right guess reinforces this instinct. A wrong guess brings the refreshment of surprise. In either case life as a spacetime expert, however long, is more fun!””
About This Quote
Source Speech: Lecture on Physics, 1975
Before solving problems, form an intuitive estimate using symmetry, invariance, or conservation to guide reasoning.
In simple terms: Guess first, then calculate.
Key Takeaway
Use quick intuition before detailed work.
Themes
problem solving
intuition
physics
Mood
analytical
curious
Type
educational
inspirational
When to use this quote
- research
- engineering
- teaching
- daily decisions
Key Concepts
symmetry
conservation
estimation
Questions to Reflect On
- When is intuition insufficient?
- How can you verify a quick estimate?
A Different Perspective
Overreliance on guesses can lead to errors.
