Truth Tables II + Denying the Antecedent + Affirming the Consequent
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1Note: Week 4, not Week 3
We talked more today about logic, specifically how to break down English words into logical equivalents which helps us identify if they're valid or invalid. We talked about the dark mirror (fallacious) forms of Modus Ponens and Modus Tollens, called Denying the Antecedent and Affirming the Consequent, which look very close to MP and MT, but are not valid reasoning.
We then showed how to do more complicated versions of truth tables. You work on two columns at a time (one if you're doing a NOT operation) and work your way slowly through the whole boolean expression.
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Tags:
csci 1
valid
invalid
sound
truth tables
modus ponens
modus tollens
denying the antecedent
affirming the consequent