Logic / Unit 4 Logic 129 short lesson, about 20 seconds
Scope and the Main Connective
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The idea
Parentheses fix scope; the main connective — the last one applied — determines what kind of statement the whole compound is.
In practice
~(p · q) is a negation. ~p · q is a conjunction. Different statements, different tables.
Where people slip
Identifying the main connective is the first move in every technique this unit teaches. Never skip it.
Your place on the trail
Every lesson rests on earlier ones and opens later ones. Tap any to jump.
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