Obversion is a term used in logic, particularly in the context of categorical propositions. It refers to a specific type of logical conversion that transforms a given categorical statement into another by changing its quality (from affirmative to negative or vice versa) and replacing the predicate with its complement. Here’s how obversion works: 1. **Identify the Original Statement**: Start with an affirmative or negative categorical proposition (e.g., "All S are P" or "No S are P").
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