Fallacies
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In this lecture, we learn about the first of our three compound syllogisms–also known sometimes as a “hypothetical” syllogism. The conditional syllogism comes in two varieties, “mixed” and “pure,” and we’ll learn about four different moods for each.
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With this lecture, we begin to learn about compound syllogisms, which allow us much greater flexibility in the ways we analyze the world logically.
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Here’s the exciting conclusion of section 7.3, covering the final two rules of validity and two handy corollaries that make it easier (and faster) to recognize the validity (or invalidity) of syllogisms that rely on particular premises.
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In this lecture, I tacitly acknowledge that it was insane for the author of our text, whoever he was, to put all five rules of validity into a single section of the text. We’ll take section 7.3 in two parts, and in this part I cover the first three rules of validity, which all deal
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In this final lecture of chapter 2, we cover three more fallacies of clarity plus the “golden rule” for dealing with ambiguities. I also offer some advice on how to make a study guide for this or any other course.
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In this lecture, we cover our first widely recognized fallacy: equivocation. Along the way, we also cover the general topic of fallacies, and why there is no universally recognized list of them. Finally, we cover the extremely important principle of “hermeneutical generosity.”
Logic Lectures 