abductive reasoning
Best explanation inference
Abductive reasoning is inference to the best explanation—forming a hypothesis that accounts for observed facts.
Unlike deduction (which guarantees conclusions from premises) or induction (which generalizes from examples), abduction works backward from evidence to the most plausible cause: The grass is wet; it probably rained.
Scientists, doctors, and detectives rely on abductive reasoning when diagnosing problems or reconstructing events from incomplete information.
Testable proposed explanation
- conjectureGuess from limited facts
- speculationUnproven theorizing or risky investment
- presumptionBelief held without proof
- assumptionUnverified belief accepted as true
supposition · guesswork · hunch · intuition · surmise · educated guess · best explanation · plausible
Act of finding something
- explanationStatement making something clear
- empiricalBased on observation, not theory
- observationAttentive watching or remark
- evidenceFacts supporting truth
scientific method · model building · prediction · Sherlock Holmes · Darwin · Kepler · anomaly · phenomenon
Systematic comparison of possible conditions
- symptomsIndicators of disease
- signsDisplays conveying information
- etiologyScience of disease origins
- assessmentFormal evaluation of worth
evaluation · pattern recognition · triage · troubleshooting · root cause · forensics · detective work · elimination
Formal deductive argument structure
- premiseFoundation for logical argument
- conclusionEnd or deduction
- validityQuality of being sound
- soundnessReliability of structure
argumentation · cogency · proposition · formal logic · critical thinking
hypothesis
Testable proposed explanation
- conjectureGuess from limited facts
- speculationUnproven theorizing or risky investment
- presumptionBelief held without proof
assumption · supposition · guesswork · hunch · intuition · surmise · educated guess · best explanation · plausible · likelihood
discovery
Act of finding something
- explanationStatement making something clear
- empiricalBased on observation, not theory
- observationAttentive watching or remark
evidence · scientific method · model building · prediction · Sherlock Holmes · Darwin · Kepler · anomaly · phenomenon · interpretive
differential diagnosis
Systematic comparison of possible conditions
assessment · evaluation · pattern recognition · triage · troubleshooting · root cause · forensics · detective work · elimination
syllogism
Formal deductive argument structure
- premiseFoundation for logical argument
- conclusionEnd or deduction
- validityQuality of being sound
soundness · argumentation · cogency · proposition · formal logic · critical thinking
- cognitionthinking, thought, cognition, remembering, memory retrieval
- inferenceinference, logical inference, entailment, syllogism, implication
- AI systemsexpert systems, knowledge base, inference, knowledge bases, fuzzy logic
- diagnosisdifferential diagnosis, diagnosis, diagnostic criteria, patient assessment, ruling out
abductive reasoningdeductive reasoning
Deriving specifics from generalities
deduction · inductive reasoning · induction · formal logic · mathematical proof
abductive reasoningproof
Demonstration of truth
certainty · logical proof · demonstration · logical necessity
reasoning, deduction, deduce, induce, induction, abduction, abductions, deductive reasoning, inductive reasoning