An argument is valid when it contains no logical fallacies. Such arguments are not necessarily , because the premises may be false. For instance, the following syllogism is valid but has a false conclusion:
- All animals are dogs. (False premise/All A are B.)
- All dogs are terriers. (False premise/All B are C.)
- Thereforse, all animals are terriers. (False conclusion: not all animals are terriers. Valid logic: If all A are B, and all B are C, then all A are C.)
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