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Is there an LSAT study guide that uses REAL logic (and not weird trademarked catch phrases)?
If you've ever taken an LSAT prep course or gotten the books you know what I'm talking about. I have an extensive background in logic from fundamental Computer Science and Philosophy courses. The books/courses all use weird trademarked catch phases to talk about diagramming. For example, they might call a method "The Distributive NOT rule(TM)," and then I have to make room for that in my head when they could have just called it DeMorgan's Law.
I'm pretty sure every company does that to some extent or other, partly for clarity, and partly to protect their approach. I teach LSAT for PowerScore, and we definitely do a little bit of that, although not as extreme as the example you cite.
My understanding is that one reason we use certain phrases is because it is easier for students to remember. If someone never studied logic, Affirming the Consequent doesn't really mean anything and isn't necessarily obvious in terms of meaning, whereas Mistaken Reversal makes a lot more sense to non-logic people (you reversed it and it was a mistake to do that). So, that probably explains at least some of that you see out there.
The DeMorgan's Law example you mention is a case where we talk about that concept in class, but we don't call it DeMorgan's Law (most people would have no idea what that meant). However, I mention to my students that if they've taken philosophy or logic that what we're talking about is called DeMorgan's in logic. That way logic students can simply fall back on what they've already learned, but new students don't have to worry about it.
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The PowerScore LSAT Logic Games Bible is the most comprehensive book available for the Logic Games section of the LSAT. The intent of this book is to provide you with an advanced system for attacking any game you encounter on the LSAT...
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Preparing to take the LSAT in 2011 or 2012? The PowerScore LSAT Logical Reasoning Bible is the most comprehensive book available for the Logic Reasoning section of the LSAT. This book will provide you with an advanced system for attacking any Logical Reasoning question that you may encounter on the LSAT...
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