Informal Logic
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Today, as the finale to the entire course, we learn how to argue about the Loch Ness Monster, Bigfoot, and alien abductions (among other things). I refer, of course, to fallacies of presumption, which are a kind of logical cheating.
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Some arguments marred by fallacies seem merely weak, whereas others seem to shoot off quite strongly in the wrong direction. In this lecture, we explore the latter group–the fallacies of misdirection.
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OK, we know the Ten Categories. So what? What can we do with them? But also in this lecture, we work some of the examples from pp. 72 and 76 of our text.
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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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We’ve finished our introductory survey of the field of traditional logic. Let’s take stock of where we’ve been and where we’re going.
Logic Lectures 