heuristic
hyoo-RIS-tik
/hjʊəˈrɪstɪk/
A practical problem-solving method or mental shortcut that yields a quick, acceptable solution rather than a guaranteed optimal result.
Tradeoffs speed and effort for acceptable accuracy in real-world decision environments.
The story behind the word. Heuristic shares its ancient Greek root 'heuriskein' with Archimedes' legendary cry 'Eureka!' ('I have found it!'). It moved into modern cognitive psychology as a name for the discovery rules our brains use when time is short.
Word relationships
- shortcut: 'Shortcut' can refer to physical paths or lazy methods, while 'heuristic' is a technical cognitive framework.
- rule of thumb: 'Rule of thumb' is an informal idiom, whereas 'heuristic' is a formal psychological term.
- algorithm: An 'algorithm' guarantees a mathematically precise solution step-by-step; a 'heuristic' is a flexible practical shortcut.
Commonly confused with
- algorithm: Algorithms yield exact solutions slowly; heuristics yield 'good enough' solutions quickly.
Word family
- heuristically (adverb): In a manner relying on practical shortcuts.
Collocations
- cognitive heuristic
- heuristic rule
- heuristic approach
- availability heuristic
Idioms & expressions
- rule of thumb
Example sentences
- "When facing complex financial decisions under tight deadlines, investors often rely on a simple heuristic rather than waiting for complete market data." Financial decision making under pressure
- "A heuristic is a mental shortcut that allows people to solve problems and make judgments quickly and efficiently." Cognitive psychology literature
Memory hook
HEURISTIC sounds like EUREKA—a quick trick to FIND an answer fast. A quick mental shortcut that works well enough.
When not to use
Do not use for step-by-step mathematically precise instructions; those are algorithms.
Fun facts
- Nobel laureate Daniel Kahneman made heuristics famous by showing how mental shortcuts lead to predictable cognitive biases.
Related words
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