An explication of what is meant by vacuous truth, or something being vacuously true.

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An Explanation of the Aristotelian style of Venn Diagrams and how to tell if a categorical syllogism is valid for Aristotle (100 Days of Logic & 90 Second Philosophy).

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A description of how to tell basic validity of categorical syllogisms for Boole with Venn Diagrams (90 Second Philosophy & 100 days of Logic)

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An explication of the conditionally valid categorical syllogisms of Figure 1 in Aristotelian Logic (90 Second Philosophy &100 Days of Logic)

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An explication of the existential fallacy for Boolean Logic (100 Days of Logic & Fallacy February).

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A description of the Modern or Boolean Square of Opposition in Categorical Logic (90 Second Philosophy & 100 Days of Logic).

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An explanation of the “O Proposition” in Categorical Logic known as the Particular Negative (90 Second Philosophy & 100 Days of Logic).

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A description of the Categorical Logic “I Proposition” also known as the particular affirmative (90 Second Philosophy & 100 Days of Logic).

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