Combining Philosophers

Ideas for H.Putnam/P.Oppenheim, John Etchemendy and Hugh LaFollette

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2 ideas

5. Theory of Logic / B. Logical Consequence / 1. Logical Consequence

14181

Validity is where either the situation or the interpretation blocks true premises and false conclusion [Etchemendy, by Read]

14180

Etchemendy says fix the situation and vary the interpretation, or fix interpretations with varying situations [Etchemendy, by Read]