gedanken experiment: meaning, definition, pronunciation and examples
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Quick answer
What does “gedanken experiment” mean?
A mental exercise in which a hypothesis is tested by thinking through its logical consequences, often under hypothetical or extreme conditions, without performing a physical experiment.
Audio
Pronunciation
Definition
Meaning and Definition
A mental exercise in which a hypothesis is tested by thinking through its logical consequences, often under hypothetical or extreme conditions, without performing a physical experiment.
A technique in physics, philosophy, and cognitive science where thought-based reasoning explores the implications of a theory by constructing an imaginary scenario. It is used to highlight contradictions, paradoxes, or theoretical predictions.
Dialectal Variation
British vs American Usage
Differences
No significant difference in meaning or usage. The anglicised spelling 'gedanken experiment' (without italics and with a space) is more common than the original German compound 'Gedankenexperiment' in both varieties.
Connotations
Connotes high-level academic, particularly theoretical physics or philosophy, discourse in both varieties.
Frequency
Equally rare in both UK and US English, confined almost exclusively to technical and academic writing.
Grammar
How to Use “gedanken experiment” in a Sentence
To perform/conduct a gedanken experiment on [TOPIC]To illustrate [PRINCIPLE] with a gedanken experimentThe gedanken experiment involving [SCENARIO]Vocabulary
Collocations
Examples
Examples of “gedanken experiment” in a Sentence
verb
British English
- One might **gedanken-experiment** about the consequences of time travel, though the verb form is highly non-standard.
American English
- Physicists often **gedanken-experiment** to refine their theories before seeking empirical evidence.
adverb
British English
- She argued **gedanken-experimentally**, constructing a flawless logical scenario.
American English
- He proceeded **gedanken-experimentally**, ignoring practical constraints.
adjective
British English
- He presented a **gedanken-experiment** approach to the paradox.
American English
- The paper's **gedanken-experiment** methodology was its core strength.
Usage
Meaning in Context
Business
Extremely rare; might be used metaphorically in high-level strategy discussions about hypothetical market scenarios.
Academic
Primary context; used in philosophy, physics, and theoretical science papers and lectures.
Everyday
Virtually never used.
Technical
Common in theoretical physics (e.g., discussions of relativity, quantum mechanics) and philosophy of mind.
Vocabulary
Synonyms of “gedanken experiment”
Strong
Neutral
Weak
Vocabulary
Antonyms of “gedanken experiment”
Watch out
Common Mistakes When Using “gedanken experiment”
- Misspelling as 'gedancken', 'gedenken', or 'gedankenexperiment' (as one word) in non-technical English writing.
- Pronouncing the 'g' as hard /ɡ/ in 'gedanken' (it is /ɡə/, not /ɡeɪ/).
- Using it interchangeably with 'hypothesis'; a gedanken experiment is a method to *test* a hypothesis.
FAQ
Frequently Asked Questions
Yes, 'gedanken experiment' is the direct German loan translation of 'thought experiment'. In English, 'thought experiment' is the more common and generic term, while 'gedanken experiment' often carries a more specific connotation to physics or classic philosophical puzzles.
In British English, it's approximately /ɡəˈdæŋkən/. In American English, it's /ɡəˈdɑːŋkən/. The first syllable is a schwa (like the 'a' in 'about'), not a hard 'gee' sound.
It is highly unlikely to be understood in general everyday conversation. Use 'thought experiment' instead unless you are speaking with specialists in relevant fields.
Einstein's 'chasing a light beam' thought experiment, which he used as a teenager to conceptualise special relativity, is a quintessential example. Another is 'Maxwell's Demon' in thermodynamics.
A mental exercise in which a hypothesis is tested by thinking through its logical consequences, often under hypothetical or extreme conditions, without performing a physical experiment.
Gedanken experiment is usually formal in register.
Phrases
Idioms & Phrases
- “This is not a gedanken experiment (i.e., this is a real, practical situation with consequences).”
Learning
Memory Aids
Mnemonic
Imagine a German thinker ('Gedanke' = thought) in a lab coat, not touching any equipment, just thinking deeply about an 'experiment'. The word starts with 'Ge-' like 'German' and 'Genius', both associated with the concept.
Conceptual Metaphor
THINKING IS EXPERIMENTING (The mind is a laboratory where ideas are tested).
Practice
Quiz
In which field is the term 'gedanken experiment' most commonly used?