Sentence examples for invalid argumentation from inspiring English sources

Fogelin and Duggan ([1987]) argue further that fallacies are not simply "invalid argumentation".

An invalid argument.

Strictly speaking, petitio principii is not a fallacy of reasoning but an ineptitude in argumentation: thus the argument from p as a premise to p as conclusion is not deductively invalid but lacks any power of conviction, since no one who questioned the conclusion could concede the premise.

9. Any argument made about torture that is not offered within Just War Theory's canons of argumentation is by definition invalid.

Your argument is invalid.

The argument is invalid.

But if an argument is invalid, it is necessarily invalid.

But insofar as they are capable of explicating the conditions for valid or correct utterances, they also explain why some utterances are invalid, some speech acts unsuccessful, and some argumentation inadequate.

were invalid.

Gorbachev ruled this invalid.

Argumentation Among Agents.