invalid argument
Logically unsound claim
An invalid argument is one where the conclusion doesn't logically follow from the premises, even if those premises were true.
In formal logic, validity concerns structure, not truth—an argument can have false premises yet be valid, or true premises yet be invalid.
In everyday use, that's an invalid argument often just means the reasoning is flawed or unconvincing, without strict logical analysis.
In computing, the phrase typically signals that a function received input it can't process: Error: invalid argument.
- logical fallacyError in reasoning
- fallacyError in reasoning
- flawedHaving faults or imperfections
- logicScience of valid reasoning
- reasoningDrawing logical conclusions
faulty · unsound · false premise · weak · refuted · debunked · premise · begging the question · conclusion · rebuttal · counterargument · ad hominem · sophistry · illogical · specious · bad faith · baseless · unfounded
- philosophy termstruth, reason, knowledge, wisdom, logic
- software bugsbug, error, glitch, defect, fault
- logicpremise, premises, conclusion, conclusions, inference
- fallaciesstraw man, red herring, circular reasoning, ad hominem, fallacy
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